All tools
Every FindUtils utility in one index, grouped by what you are trying to do. Free in the browser; 369 also run over the REST API and 369 over MCP.
- Tools
- 437
- browser tools
- Categories
- 15
- categories
- REST API
- 369
- on the REST API
No tool matches that filter. Request it.
Developer Tools 91 tools
JSON formatters, API testing, code converters, diagram editors, and more.
- 3D Rotation Visualizer Convert between Euler angles, quaternions, and rotation matrices with live 3D preview.
- A2UI Lab Interactive playground for Google's A2UI protocol. Build, validate, and prompt declarative agent UIs with surface updates, data models, and the Lit-based renderer. JSONL streaming included.
- AI Model Picker Pick the right AI model for your task. Compares GPT-4, Claude, Gemini, Llama, Mistral, and others by capability, context window, latency, and price. Filter by use case and benchmark. API
- API Docs Generator Generate API documentation in Markdown or OpenAPI format. API
- ASCII Diagram Generator AI-powered ASCII diagram generator. Describe diagrams in plain English, get publication-ready Unicode box-drawing diagrams. Supports flowcharts, sequence, ER, architecture diagrams and more.
- Base64 Encoder Encode and decode text or files to Base64 format. API
- Chmod Calculator Calculate Linux/Unix file permissions with visual grid. Convert between numeric (644) and symbolic (rw-r--r--) formats. API
- Claude Code Usage Analyzer Analyze your Claude Code token usage, costs, and session data locally. Drop your JSONL files and get instant charts. 100% private, nothing leaves your browser.
- Cloudflare Cost Calculator Estimate monthly Cloudflare developer platform costs across Workers, R2, D1, KV, Durable Objects, and 13 more products. Compare vs paid tiers. API
- Code Diff Checker Compare two code snippets side by side and highlight every difference with line numbers. API
- Code Screenshot Generator Create beautiful code screenshots with syntax highlighting, themes, and customizable backgrounds. API
- Cron Expression Generator Build and validate cron expressions with a visual editor. API
- Cron to systemd Convert a 5-field cron expression into a systemd timer plus a Kubernetes CronJob YAML file. API
- Crypto Testnet Faucets Directory of blockchain testnet faucets. Get test ETH, USDC, SOL for Ethereum, Base, Arbitrum, Solana and more. MetaMask configs included. API
- CSS Minifier Minify or beautify CSS code for production. API
- cURL to Code Convert cURL commands to JavaScript, Python, PHP, Go, Ruby, and Node.js code. API
- dnpm Configurator Generate a secure Docker-based npm wrapper that sandboxes installs and builds. Blocks supply chain attacks like the axios RAT. API
- Env Diff New Compare two .env files by key: added, removed and changed variables, with secret values masked.
- Env JSON Converter Convert a .env file to a flat JSON object and back in your browser; values stay strings, secrets are not uploaded.
- Env Linter Lint a .env file for duplicate keys, unquoted spaces, export prefixes, and drift against .env.example. API
- Env Merge New Merge a base .env with an overlay using a conflict rule you pick, and download one .env file.
- Env YAML Converter Convert a .env file to a flat YAML map or a Compose/Actions snippet, and back. API
- ER Diagram Designer Design entity-relationship diagrams visually. Create database schemas with tables, columns, and relationships.
- Form to JSON Schema HTML form in, JSON Schema out: field names, types and validation read from the markup. API
- GitHub Dev Card Turn any GitHub username into a FIFA-style dev card rated out of 99 — plus a roast, archetype, commit clock, and five more shareable vibe checks. no login.
- Glob Pattern Tester Test glob patterns against file lists in real-time. Supports *, **,?, character classes, and brace expansion. API
- GraphQL Playground Paste a GraphQL schema and query. See a syntax or schema check with line-level errors. API
- GraphQL Schema Validator Validate GraphQL schema definitions for errors. API
- GraphQL to TypeScript Generate TypeScript types from GraphQL schemas. API
- HAR to cURL Convert HAR files to cURL commands for debugging. API
- HAR Viewer Paste a HAR file and inspect method, URL, status, size, and time. Copy one entry as cURL. Runs in the browser. API
- HTML Entity Finder Search HTML entities and special characters by name or description. Copy entity codes, hex codes, and characters instantly. API
- HTML Formatter Beautify and minify HTML code with syntax highlighting. API
- HTTP Request Builder Build and send an HTTP request. Shows status, headers, and body. Public http and https hosts only.
- INI JSON Converter Convert INI, .cfg and .conf sections to nested JSON and back in your browser. API
- JQ Playground Online jq playground to test, filter, and transform JSON data with jq expressions. Real-time results, built-in examples, and cheat sheet. API
- JSON Diff Compare two JSON objects and highlight differences semantically. API
- JSON Escaper Escape and unescape JSON strings for embedding in code. API
- JSON Faker Generate realistic fake JSON data with names, emails, addresses, and 40+ field types. API
- JSON Formatter Validate, format, and minify JSON data instantly. API
- JSON Path Finder Explore JSON interactively and find JSONPath expressions. API
- JSON Schema Form Builder Add fields and validation visually, then export the JSON Schema; the schema is the output, not a form. API
- JSON Schema Generator JSON sample in, Draft-07 schema out: types, formats and nesting detected from the data. API
- JSON Schema Validator Validate JSON data against JSON Schema Draft-07 specifications. API
- JSON to Form Turn a JSON field list into HTML, Tailwind, Bootstrap 5 or React form code. API
- JSON to Go Struct Convert JSON to Go struct definitions with JSON tags and type inference. API
- JSON to Java Class Generate Java POJO classes from JSON with Lombok and validation support. API
- JSON to Liquid Turn JSON, JS, Python, PHP or YAML data, or a Handlebars, Mustache or Knap template, into Shopify Liquid. API
- JSON to PDF Renderer Render JSON specifications as professionally formatted PDF documents in your browser.
- JSON to Python Class Create Python dataclasses or Pydantic models from JSON data. API
- JSON to TypeScript Convert JSON to TypeScript interfaces or type aliases with customizable options. API
- JSON to URL Params Convert JSON objects to URL-encoded query parameters. API
- JSON to Zod Schema Generate Zod validation schemas from JSON data with type inference. API
- JSON TOML Converter Convert a JSON object to TOML 1.0 and TOML back to JSON in your browser, with tables and arrays of tables.
- JSON YAML Converter Convert between JSON and YAML formats instantly with syntax validation. API
- JWT Decoder Decode and inspect JSON Web Tokens (JWT) instantly. API
- Knap Template Renderer Render a Knap template (the Obsidian Web Clipper language) with JSON data into Markdown.
- LLM System Requirements Calculator Estimate VRAM, RAM, and disk space for running open-source LLMs locally (Llama, Mistral, Qwen, DeepSeek, Gemma, Phi) across quantization levels. API
- Load Balancer Design Tool Visually design load balancer architectures and generate Nginx, HAProxy, and Caddy configuration files.
- Markdown Previewer Write and preview Markdown with live rendering. API
- Markdown Table to Image Paste a Markdown table and export it as a high-resolution PNG, JPG, or SVG. Customise theme, fonts, and padding. Great for shipping tables in slides and tweets. API
- OpenAPI Validator Check the required structure of OpenAPI 3.x and Swagger 2.0 documents. Not a Spectral-style lint. API
- PEM Decoder Paste a PEM certificate, CSR, or key. See type, subject, SAN, dates, and issuer in the browser. API
- Plist JSON Converter Convert Apple XML and binary property lists to JSON, and JSON back to an XML plist. API
- Postman to cURL Convert Postman collections to cURL commands. API
- Properties JSON Converter Convert Java .properties to nested or flat JSON and flatten JSON back to dotted keys in your browser.
- Regex Tester Test and debug regular expressions with real-time matching. API
- SQL Formatter Format and beautify SQL queries for readability. API
- SQLite Browser Open.db /.sqlite /.sqlite3 files in your browser. Run SQL queries, browse schemas, export CSV / JSON / Markdown — your database never uploads. Powered by the official @sqlite.org/sqlite-wasm.
- SQLite Diff Drop two SQLite databases side-by-side and see exactly what changed — added or removed tables, column changes, and row-level diffs by primary key. 100% in-browser, no upload.
- State Machine Designer Design finite state machines with states and transitions. Visualize automata and export state diagrams. API
- Swagger to OpenAPI Convert Swagger 2.0 specs to OpenAPI 3.0 format. API
- System Architecture Diagram Designer Design and visualize software system architectures with drag-and-drop components. Create diagrams with servers, databases, APIs, message queues, containers, and more.
- Tailwind to StyleX Converter Convert Tailwind CSS v4 theme variables, design-token JSON, or static Tailwind config objects into StyleX constants and TypeScript declarations. API
- TOML Diff New Compare two TOML files by parsed value and list added, removed and changed key paths.
- ULID & NanoID Generator Generate time-sortable ULIDs or short URL-safe NanoIDs with a custom alphabet and length, in batches of up to 100. Crypto-random. API
- UML Diagram Editor Create UML diagrams with a live PlantUML editor. Write code and instantly preview sequence, class, activity, state, and component diagrams.
- Unix Timestamp Convert Unix timestamps to human-readable dates. API
- URL Parser Split a URL into protocol, host, port, path, query table and hash, as rows and as JSON. Validate it, with an optional HTTPS requirement. API
- Visual JSON Editor Edit JSON visually with drag-and-drop reordering, inline editing, type conversion, and undo/redo.
- Webhook Tester Create a private request bin, send a curl to it, and inspect method, headers, and body. Bins expire. No account.
- WVW Apps.json Generator Create and validate apps.json files for wvw.dev (World Vibe Web). Visual form builder for app store listings. API
- WVW Store Checker Check if your apps.json is synced with World Vibe Web app store. Compare app listings, detect missing apps, and see next update countdown.
- x402 Config Generator Generate x402 payment middleware code for Express, Hono, Next.js, Fastify, Gin, FastAPI, Flask, and client SDKs. Configure routes, pricing, and networks visually. API
- XML Formatter Beautify and minify XML documents with syntax validation. API
- YAML TOML Converter Convert YAML to TOML 1.0 and TOML back to YAML in your browser. API
- YAML Validator Validate and format YAML files with syntax checking for Kubernetes and DevOps. API
- Yolobox Configurator Generate.yolobox.toml configs and CLI commands for running AI coding agents in isolated containers. Supports Claude, Codex, Gemini, and more.
- Yoyo Component Generator Generate Yoyo PHP component boilerplate with properties, actions, events, computed properties, and lifecycle hooks. Supports PHP, Blade, and Twig templates. API
- Yoyo Config Generator Generate Yoyo PHP framework bootstrap and configuration code for PHP, Blade, or Twig with vanilla PHP or Laravel integration. API
- Yoyo Loading State Builder Build Yoyo spinning and loading state attributes interactively with show/hide, CSS class toggling, attribute setting, and live preview. API
Showing 9 of 91
Converters 65 tools
File format converters for images, videos, audio, documents, and data.
- ASS to SRT Flatten a styled .ass or .ssa subtitle script to plain .srt that any player accepts. API
- AVIF to JPG Convert .avif images from a CDN or phone to JPG, PNG, or WebP in your browser.
- Bookmarks Diff New Compare two bookmarks.html exports and see which links were added, removed, renamed or moved. API
- Bookmarks HTML to CSV Turn a browser bookmarks.html export into a CSV with one row per link and its folder path. API
- Bookmarks JSON to HTML New Turn Chrome's profile Bookmarks file or a Firefox JSON backup into a bookmarks.html any browser imports. API
- Clean ZIP Remove __MACOSX, .DS_Store, ._ files, Thumbs.db and desktop.ini from a ZIP and download a clean copy.
- Country Lookup Search countries by name, currency, timezone, or capital. Get detailed info cards with flags and contact details. API
- CSV Column Extractor Extract specific columns from CSV files and download filtered data.
- CSV Dedupe New Remove duplicate rows from a CSV by whole row or by key columns such as email or SKU, keep the first or last copy, and download the clean file. API
- CSV Diff New Compare two CSV or TSV exports by a key column and see the rows that were added, removed or changed, down to the cell. Reordered rows are not changes. API
- CSV Merger Merge multiple CSV files into one. Combine vertically or horizontally.
- CSV to Bookmarks HTML Turn a spreadsheet of links into a bookmarks.html file Chrome, Firefox, Edge and Safari import. API
- CSV to Excel Convert CSV files to Excel format (.xlsx) online.
- CSV to ICS Turn a spreadsheet of events into an .ics file Google Calendar, Apple Calendar and Outlook import. API
- CSV to NDJSON Turn a spreadsheet CSV into JSON Lines, one object per line, for log shippers, bulk loaders and fine-tune sets. API
- CSV to SQL Turn a CSV into CREATE TABLE and INSERT statements for Postgres, MySQL, or SQLite. API
- CSV to VCF Turn a contacts spreadsheet into one .vcf file that iPhone, Android and Google Contacts import. API
- CSV Viewer View, search, sort, and filter CSV files online.
- Dedupe Bookmarks Remove duplicate links from a Chrome, Firefox, Edge or Safari bookmarks.html export. API
- DOCX Comments Extractor New Drop a reviewed Word file and export every comment, author, date and anchor as CSV or Markdown.
- DOCX to HTML Drop a Word .docx and get clean semantic HTML for a CMS, a blog, or an email editor.
- DOCX to Markdown Drop a Word .docx and get clean Markdown for a README, wiki, or site page.
- HEIC to JPG Convert iPhone .heic photos to JPG, PNG, or WebP in your browser.
- HTML Table to JSON Convert HTML tables to JSON arrays or objects. API
- HTML to DOCX Paste or drop HTML and download an editable Word .docx with headings, lists, links, and tables.
- HTML to Markdown Convert HTML code to Markdown format instantly. API
- ICNS to PNG Extract a Mac app icon from an .icns file as PNG, largest size or every size.
- ICS to CSV Turn a Google, Apple or Outlook .ics calendar export into a CSV with one row per event. API
- ICS to JSON Parse a .ics calendar export into JSON, one object per event, for scripts and fixtures. API
- Image Compressor Reduce image file size without losing quality.
- Image Converter Convert images between PNG, JPG, WebP, GIF formats.
- Image Resizer Resize images by percentage or exact dimensions.
- Image to Base64 Convert images to Base64 encoded strings for embedding.
- Internet Shortcuts to CSV Turn Windows .url Internet Shortcut files, or a ZIP of them, into a CSV or a plain list of URLs. API
- JSON to CSV Convert JSON data to CSV format for spreadsheets and databases. API
- JSON to Markdown Table Transform JSON arrays into GitHub-flavored Markdown tables. API
- JSON to SQL Turn a JSON array into CREATE TABLE and INSERT statements. Booleans and null survive. API
- JSON to XML Convert JSON data to XML format with customization. API
- Markdown to HTML New Paste Markdown or drop a .md file and get HTML to copy or download, tables and task lists included. API
- Markdown to PDF Convert Markdown to PDF with custom background, headers, images, and fonts. Generate styled PDF documents in your browser.
- Markdown to Word Convert Markdown to Word (.docx) with custom background, headers, images, and fonts. Download professional documents instantly.
- Merge Bookmarks New Combine two or more bookmarks.html exports from Chrome, Firefox, Edge or Safari into one file to import. API
- Merge ICS Combine several .ics calendar exports into one calendar file, with optional UID dedupe. API
- Merge VCF New Combine several .vcf contact files into one to import, with optional skip of exact duplicate cards. API
- NDJSON to CSV Turn newline-delimited JSON (.ndjson, .jsonl) from API logs and exports into a flat CSV, nested keys flattened, in your browser. API
- Number Base Converter Convert numbers between binary, decimal, hexadecimal, and octal. API
- ODT to Markdown Drop a LibreOffice .odt and get clean Markdown for a wiki, README, or docs site.
- OPML to CSV Flatten an OPML feed or podcast subscription export into a CSV of titles, feed URLs and folders. API
- PDF to Image Convert PDF pages to high-quality images instantly.
- PPTX to PDF Converter Convert PowerPoint presentations to PDF or images. 100% browser-based, no upload required.
- RTF to Markdown New Drop a legacy .rtf from WordPad or an old mail export and get editable Markdown back. API
- SBV to SRT New Convert a YouTube Studio .sbv caption export to SubRip .srt that editors and players accept, or convert back the other way. API
- Social Media Image Resizer Resize images for Facebook, Instagram, Twitter, LinkedIn and more.
- Split ICS Cut a large .ics calendar into smaller .ics parts, zipped, so importers accept it. API
- SQL to CSV Paste a .sql dump and get a CSV per table. No database to restore. API
- SQL to JSON New Turn SQL INSERT statements or a .sql dump into JSON objects with typed values, one array per table. Nothing is executed. API
- SRT to TXT New Turn SRT or VTT subtitles into a plain-text transcript without timestamps or cue numbers. API
- SRT to VTT Convert SubRip captions to WebVTT and back, both directions on one page. API
- TIFF to JPG Convert .tif scans and photos to JPG, PNG, or WebP, one image per page.
- TSV to CSV Convert tab-separated exports from psql, mysql and Excel into RFC 4180 CSV, and CSV back into TSV, with correct quoting. API
- Unit Converter Convert length, weight, temperature, and more. API
- URL to Webloc New Convert Windows .url Internet Shortcuts, or a ZIP of them, into Mac .webloc files Finder opens. API
- VCF to CSV Turn an iPhone, Android, Gmail or Outlook .vcf contacts export into one CSV row per contact. API
- Webloc to URL New Convert Mac .webloc website shortcuts, or a ZIP of them, into Windows .url Internet Shortcuts. API
- Word to PDF Converter Convert Word documents (.docx) to PDF and download as ZIP. 100% browser-based.
Showing 9 of 65
Calculators 32 tools
Math, health, fitness, date, and scientific calculators.
- 3D Function Plotter Plot 3D mathematical functions z=f(x,y) with interactive surface visualization and color mapping.
- 3D Geometry Visualizer Explore and visualize 3D geometric shapes interactively with wireframe, edges, and real-time calculations.
- 3D Vector Visualizer Visualize 3D vectors, calculate dot and cross products, angles, and projections interactively.
- Age Calculator Calculate exact age in years, months, and days. API
- Aspect Ratio Calculator Calculate and convert aspect ratios for images and videos. API
- BMI Calculator Calculate your Body Mass Index and understand your weight category. API
- Body Fat Calculator Estimate body fat percentage using the Navy method or BMI estimation. API
- Calorie Calculator New Work out how many calories to eat per day to lose, maintain, or gain weight, using the Mifflin-St Jeor equation and the deficit or surplus you choose. API
- Carbon Footprint Calculator Calculate your annual carbon footprint from home energy, transportation, and lifestyle choices. API
- Career Experience Calculator Calculate your total professional experience across multiple jobs. API
- Curve Fitting Calculator Fit linear, polynomial, exponential, logarithmic, power, logistic, Gaussian, or custom models to your X/Y data and get coefficients, R-squared, and a chart.
- Daily Habit Calculator Track how your daily habits add up over time. API
- Date Difference Calculator Calculate the difference between two dates in days, weeks, months. API
- Fraction Calculator New Add, subtract, multiply and divide fractions and mixed numbers with every step shown, reduced to lowest terms and converted to a decimal. API
- GCD & LCM Calculator New Find the greatest common divisor and least common multiple of two whole numbers using the Euclidean algorithm. API
- GPA Calculator Calculate your grade point average easily. API
- Grade Calculator Calculate weighted grades and target scores. API
- Macro Calculator Calculate daily protein, carbs, and fat needs for your fitness goals. API
- One Rep Max Calculator Estimate your 1RM for any lift using proven formulas with training weight recommendations. API
- Percentage Calculator Calculate percentages, increases, and decreases. API
- Photo Measurement Measure real-world objects from photos using reference calibration.
- Prime Checker New Check whether a number is prime, and see its prime factorisation when it is not. API
- Relationship Calculator Calculate how long you've been together as a couple. API
- Running Pace Calculator New Give any two of pace, distance and finish time to solve for the third, and see the projected 5K, 10K, half marathon and marathon times. API
- Scientific Calculator Advanced calculator with trigonometry, logarithms, and scientific functions. API
- Sleep Calculator Calculate optimal bedtime and wake times based on 90-minute sleep cycles. API
- Statistics Calculator New Paste a list of numbers and get count, sum, mean, median, mode, range, variance, standard deviation and the quartiles with the interquartile range. API
- TDEE Calculator Calculate your Total Daily Energy Expenditure based on BMR and activity level for weight management. API
- Time Difference Calculator Hours between two times of day, including a shift that runs past midnight. API
- Travel Budget Calculator Plan your trip expenses including flights, hotels, food, and activities. Get a complete cost breakdown. API
- Water Intake Calculator Calculate your optimal daily water intake based on weight, activity, and climate. API
- Work Anniversary Calculator Calculate how long you've been working at your job. API
Showing 9 of 32
Finance Tools 32 tools
Loan calculators, investment tools, invoice generators, and tax calculators.
- Amortization Calculator Generate loan amortization schedules showing principal and interest breakdown. See how extra payments save money and shorten loan term. API
- Auto Loan Calculator Calculate car loan payments, total interest, and amortization. Factor in down payment, trade-in value, and sales tax. API
- Break-Even Calculator Calculate your break-even point to understand when your business becomes profitable. API
- Business Loan Calculator Calculate business loan payments, interest, and effective APR. Compare SBA loans, equipment financing, and term loans. API
- Compound Interest Calculator Calculate compound interest with daily, monthly, or annual compounding. Visualize investment growth and wealth accumulation over time. API
- Credit Card Payoff Calculator Calculate credit card payoff time and total interest. See how extra payments can help you become debt-free faster. API
- Debt Payoff Calculator Create a debt payoff plan using avalanche or snowball methods. Calculate payoff time, interest saved, and track progress to debt freedom. API
- Dividend Calculator Calculate dividend income, yield on cost, and growth with DRIP reinvestment. Plan your passive income from dividend stocks. API
- Down Payment Calculator Calculate home down payment amounts and PMI costs. Compare 3%, 5%, 10%, and 20% down payment options and savings timelines. API
- FIRE Calculator Calculate your FIRE number for Financial Independence, Retire Early. Plan Lean FIRE, Fat FIRE, or Coast FIRE based on savings rate. API
- Home Affordability Calculator Calculate how much house you can afford based on income, debts, and DTI ratio. Get a realistic home buying budget. API
- Inflation Calculator Calculate purchasing power and the real value of money over time using historical CPI data. See how inflation affects your savings. API
- Investment Calculator Calculate investment growth with compound interest and monthly contributions. Project future value of stocks, bonds, and retirement accounts. API
- Invoice Generator Create professional invoices online. Add line items, taxes, and download as PDF. Perfect for freelancers and small businesses. API
- KKTC Exchange Rates Live exchange rates from Northern Cyprus (KKTC) exchange offices. Compare GBP, EUR, USD rates in Turkish Lira with real-time updates. API
- Loan Calculator Calculate monthly loan payments, total interest, and amortization schedules for personal loans, mortgages, and auto loans. API
- Mortgage Calculator Calculate monthly mortgage payments, total interest, and loan-to-value ratio. Plan your home purchase with accurate payment estimates. API
- Net Worth Calculator Calculate your net worth by adding assets and subtracting liabilities. Track financial health and debt-to-asset ratio over time. API
- Paycheck Calculator New Estimate US take-home pay from a gross salary: federal income tax from the published bracket tables, plus the employee half of Social Security and Medicare. Federal and FICA only. API
- Profit Margin Calculator Calculate profit margin and markup percentage. Understand margin vs markup difference and set profitable pricing for your business. API
- Purchase Order Generator Create professional purchase orders (PO) online. Add vendor details, line items, shipping info, and download as PDF. API
- Refinance Calculator Calculate mortgage refinance savings and break-even point. Compare current vs new loan to determine if refinancing is worth it. API
- Retirement Calculator Plan your retirement with 401(k), IRA projections and the 4% withdrawal rule. Calculate if you are on track for retirement goals. API
- ROI Calculator Calculate return on investment (ROI) for stocks, real estate, and business investments. Compare simple and annualized returns. API
- Salary Calculator Convert salary between hourly, daily, weekly, bi-weekly, monthly, and annual rates. Calculate your true hourly wage. API
- Savings Calculator Calculate savings growth with compound interest and regular contributions. Plan your emergency fund, retirement, or savings goals. API
- SBA Loan Calculator Calculate SBA 7(a), 504, and Express loan payments. Includes guarantee fees, amortization, and effective APR.
- Self-Employment Tax Calculator Calculate self-employment tax (15.3%), income tax, and quarterly estimated payments for freelancers, contractors, and gig workers. API
- Stock Average Calculator Calculate stock average cost basis using dollar cost averaging (DCA). Track multiple purchases and see your break-even price. API
- Timesheet Calculator Calculate hours worked, overtime pay, and total earnings. Track time for payroll, freelance billing, and contractor invoicing. API
- Tip Calculator Calculate restaurant tips and split bills easily. Determine 15%, 18%, 20% tips and divide costs among multiple people. API
- VAT Calculator Calculate VAT and sales tax instantly. Add or remove tax from prices, extract VAT amounts. Works with any tax rate worldwide. API
Showing 9 of 32
Generators 31 tools
QR codes, UUIDs, barcodes, signatures, social media content, and more.
- Barcode Generator Generate barcodes in Code128 and Code39 formats. API
- Caption Generator Build social captions from templates in five tones with hashtags and a call to action. No AI model. API
- Email Signature Generator Create professional email signatures for Gmail, Outlook, and other clients. API
- Emoji Finder Search 3,700+ emojis with fuzzy search. Find by keyword, copy with one click. Includes skin tone variants.
- Hashtag Generator Generate relevant hashtags from a built-in keyword database for Instagram, X, TikTok, and more. Rule-based, no live trend data. API
- Image Caption Maker Add captions and text overlays to your images.
- JSON to Chart Generate interactive charts from JSON data. API
- JSON to Email Template Generate HTML email templates from JSON data. API
- JSON to Invoice Generate professional invoices from JSON data.
- JSON to Org Chart Create organizational hierarchy charts from JSON data. API
- JSON to Pricing Table Create professional pricing tables from JSON configuration. API
- JSON to Product Card Generate e-commerce product cards from JSON data. API
- JSON to Profile Card Create team member profile cards from JSON data. API
- JSON to README Generate README.md files from JSON project data. API
- JSON to Resume Create professional resumes from JSON data.
- JSON to Social Card Generate beautiful social media cards from JSON data. API
- JSON to Testimonial Card Generate customer testimonial cards from JSON data. API
- JSON to Timeline Create visual timelines from JSON event data. API
- LinkedIn Post Generator Create engaging LinkedIn posts using proven templates for thought leadership and engagement. API
- Lorem Ipsum Generator Generate placeholder text for your designs and layouts. API
- Math Expression Generator Render LaTeX math expressions beautifully with 40+ formula templates. Export as PNG.
- Placeholder Image Generator Create placeholder images with custom sizes and colors. API
- QR Code Generator Generate QR codes for URLs, text, Wi-Fi, and vCards.
- Random Name Picker Pick a raffle or giveaway winner from a pasted list, with a winner history. Crypto-random and fair. API
- Random Picker Generate random numbers, pick from a list, or split a group into teams. Crypto-random and fair. API
- Signature Generator Create digital signatures and handwritten-style text. API
- Social Media Bio Generator Create compelling bios for Instagram, Twitter, TikTok, LinkedIn, and YouTube. API
- Thread Generator Create engaging Twitter/X threads from long-form content with perfect tweet sizing. API
- UUID Generator Generate unique identifiers (UUID/GUID) instantly. API
- vCard Generator Create a vCard (.vcf) contact file with name, emails, phones, address, and more. vCard 3.0 or 4.0, escaped and folded per RFC 6350. API
- YouTube Description Generator Create optimized YouTube video descriptions with timestamps, links, and SEO keywords. API
Showing 9 of 31
Media Tools 27 tools
Video trimmers, audio converters, format tools, and metadata extractors.
- Audio Format Converter Convert audio between MP3, WAV, OGG, and FLAC formats.
- Audio Metadata Extractor Extract metadata, duration, and codec info from audio files.
- Audio Resampler Change audio sample rate for compatibility or quality.
- Audio Trimmer Cut and trim audio files to specific timestamps.
- Extract Audio from Video Extract audio tracks from video files as MP3 or WAV.
- GIF to Video Convert an animated GIF to a smaller MP4 or WebM video.
- Image to ASCII Video Convert any image into an animated ASCII art or emoji mosaic video clip. Choose from 6 animation styles, customize colors and density, and export as a shareable WebM video.
- Media Info Viewer Extract EXIF data, GPS location, and camera info from images, videos, and audio files.
- Mute Video Remove the audio track from a video with no quality loss.
- Subtitle Cleaner New Strip HTML tags, ASS overrides, SDH brackets and speaker labels from SRT or VTT captions without touching timing. API
- Subtitle Extractor Extract subtitle tracks from MKV and MP4 video files.
- Subtitle FPS Converter New Rescale every subtitle timestamp between frame rates, such as 23.976 to 25, to fix captions that drift further out of sync the longer a video plays. API
- Subtitle Merger New Join multiple SRT or VTT subtitle files into one track. Append lays sequential parts end to end and fixes the timestamps that restarted at zero; Dual stacks two languages on one timeline.
- Subtitle Overlap Fixer New Fix SRT or VTT cues that start before the previous cue ends, with a minimum cue duration. Text stays as it is. API
- Subtitle Shifter Shift every cue in an SRT or VTT file by one offset so the captions match the audio again. API
- Video Compressor Reduce video file size while maintaining quality. Privacy-focused.
- Video Cropper Crop a video to any region with social aspect ratio presets.
- Video Format Converter Convert videos between MP4, WebM, and MKV formats.
- Video Merger Join multiple video clips into one continuous video.
- Video Metadata Extractor Extract duration, resolution, codecs, and metadata from videos.
- Video Resizer Change video resolution and dimensions. Browser-based processing.
- Video Reverser Play a video backwards with reversed audio.
- Video Rotator Rotate videos 90, 180, or 270 degrees instantly.
- Video Speed Changer Speed up or slow down a video from 0.25x to 4x.
- Video Thumbnail Generator Extract frames from videos as thumbnail images.
- Video to GIF Converter Convert video clips to animated GIFs directly in your browser.
- Video Trimmer Cut and trim video clips to specific timestamps. No upload required.
Showing 9 of 27
Design Tools 25 tools
Color converters, gradient generators, CSS tools, and image editors.
- 3D Model Viewer Upload and inspect GLTF/GLB 3D models with material inspector, animation player, and geometry stats.
- Box Shadow Generator Create beautiful CSS box shadows with presets. API
- Color Blindness Simulator See a palette or screenshot the way common colour vision deficiencies render it.
- Color Converter Convert HEX, RGB, HSL and generate palettes. API
- Color Name Finder Find color names from hex codes or search colors by name. Browse all CSS named colors with live previews.
- Color Palette Generator Generate harmonious color palettes from any color. API
- Contrast Checker Check color contrast for WCAG accessibility. API
- CSS Animation Generator Create custom CSS animations with a visual keyframe timeline editor. Design, preview, and export as CSS, Tailwind, React, or Framer Motion code. API
- CSS Border Radius Generator Set each corner radius with a live preview and copy the CSS.
- Cubic Bezier Generator Drag two control points to shape a CSS easing curve and copy the value.
- Favicon Generator Generate favicons and app icons for all platforms.
- Font Icon Search Search icons from FontAwesome, Material Icons, Lucide, and Heroicons by name or keyword. Find the perfect icon instantly. API
- Glassmorphism Generator Create trendy glass-effect UI components. API
- Gradient Generator Create beautiful CSS gradients with live preview. API
- Image Color Extractor Extract dominant colors from images and export as HEX, RGB, CSS, or Tailwind.
- Image Cropper Crop an image to any aspect ratio and download it, without uploading the file.
- Image Eraser Remove unwanted objects from photos using AI. Browser-based, no upload needed.
- Image to Puzzle Turn any photo into a playable jigsaw puzzle with realistic interlocking pieces. Choose grid size, difficulty, and solve with drag-and-drop. online puzzle maker.
- Lottie Editor Edit Lottie animations in your browser with GPU-accelerated Skia rendering. Modify colors, text, opacity and export modified JSON. no signup.
- PBR Material Previewer Preview PBR texture maps on 3D shapes with tiling controls and environment lighting.
- Photo Calendar Create a beautiful visual monthly journal by adding photos to calendar dates. Export as PNG or PDF for printing. Works offline with no uploads.
- Photo Editor Create stunning images with text, stickers, and filters. No watermark!
- Sticker Maker Turn any photo into a custom sticker with decorative borders, stamp edges, shapes, and transparent backgrounds. Download as PNG for WhatsApp, Telegram, iMessage, or print.
- SVG Animation Generator Create animated SVGs with a visual editor. Animate SVG elements with transforms, opacity, color, and path animations. Export as animated SVG or CSS code. API
- SVG Path Visualizer Visualize and edit SVG path data with real-time preview and command breakdown.
Showing 9 of 25
Security Tools 25 tools
Password generators, hash tools, encryption, and security analyzers.
- 2FA Code Tester Test and verify TOTP two-factor authentication codes from your authenticator app. API
- Cookie Analyzer Analyze browser cookies for security attributes like Secure, HttpOnly, and SameSite. API
- CSP Header Generator New Build a Content-Security-Policy header from presets and directives, with a meta tag and warnings for unsafe sources. API
- Data Sanitizer Sanitize user input for HTML, SQL, XSS, and other security threats. API
- DOCX Metadata Remover New Strip the author, company, template and editing history a Word document carries in its properties, without uploading the file.
- Email Security Checker Verify email domain security with SPF, DKIM, DMARC, and MTA-STS checks. API
- Email Validator Validate email addresses for proper format and syntax. API
- EXIF Remover Remove metadata from photos to protect your privacy. Strip GPS, camera info, and timestamps.
- File Hash Calculator Calculate MD5, SHA-1, SHA-256, SHA-512 checksums for files.
- Hash Comparison Tool Compare file or text hashes to verify integrity using SHA-256, SHA-512, and more. API
- HMAC Generator Generate HMAC signatures for message authentication. API
- MD5 Hash Generator Generate MD5, SHA-1, SHA-256 hashes from text. API
- Password Breach Checker Check if your passwords have been exposed in known data breaches using k-Anonymity. API
- Password Generator Create strong, secure passwords with customizable rules. API
- Password Hasher (bcrypt / Argon2id) New Hash a password with bcrypt or Argon2id for storage, or verify a password against a stored hash, in your browser.
- Password Pattern Validator Validate passwords against custom patterns, common passwords, and entropy requirements. API
- Password Strength Checker Analyze password security and get improvement suggestions. API
- Phone Number Validator Validate and format phone numbers from any country with E.164 and international formats. API
- Privacy Policy Checker Analyze privacy policies for data collection, user rights, and compliance issues. API
- Random Key Generator Generate secure random keys for APIs and encryption. API
- RSA Encryption Tool (PEM) Generate RSA key pairs as PEM and encrypt or decrypt a short message with RSA-OAEP. Not OpenPGP. API
- Secure Note Sharing Create encrypted, self-destructing notes with password protection and expiration.
- Text Encryption Encrypt and decrypt text using AES-256 encryption. API
- URL Safety Checker Analyze URLs for potential security threats and phishing indicators. API
- Windows Update Settings Generator Generate .reg files, PowerShell scripts, and batch files to control Windows Update behavior. Disable auto-updates, block restarts, manage driver updates. API
Showing 9 of 25
Productivity 23 tools
Timers, spreadsheets, workflow builders, and project management tools.
- Client Status Report Generator Generate professional status reports for clients. Track completed work, blockers, and next goals with custom branding. API
- Countdown Timer Set countdown timers for events, deadlines, and special occasions.
- Decision Tree Builder Build interactive decision trees with yes/no branches. Visualize decision logic and export flowcharts.
- Dev Request Prioritizer Prioritize development requests using weighted scoring. Track analysis, estimate effort, see what to build next. API
- Eisenhower Matrix New Sort tasks by urgent and important into four quadrants: do first, schedule, delegate, eliminate. API
- Keyboard Shortcut Finder Find keyboard shortcuts for VS Code, Chrome, Excel, Photoshop and more. Search by action name with Mac and Windows keys. API
- Mind Map Maker Create beautiful mind maps with drag-and-drop nodes. Brainstorm ideas, organize thoughts, and export your mind maps.
- Pomodoro Timer Boost productivity with timed work sessions.
- Privacy Policy Generator Generate GDPR, CCPA, and COPPA compliant privacy policies for your website or app. API
- Retro Meeting Run engaging sprint retrospectives with anonymous feedback. Reveal items one by one and vote on action items. API
- Scope Creep Tracker Track and visualize project scope changes over time. Monitor original scope vs additions and generate reports. API
- Screenshot Tool Capture your screen instantly and download or copy screenshots.
- Slide Deck Builder Create stunning presentations with text, images, and shapes. Export to PDF, PNG, or GIF.
- Social Media Calendar Generator Plan your social media content with weekly or monthly posting schedules. API
- Spreadsheet Editor Edit CSV and Excel files directly in your browser without uploading to any server.
- Sprint Capacity Calculator Calculate your team's realistic sprint capacity accounting for meetings, PTO, holidays, and historical velocity. API
- Stopwatch Online timer with lap times and precision.
- Technical Debt Register Track, prioritize, and communicate technical debt. Log debt items with severity and effort, calculate interest cost. API
- Teleprompter web-based teleprompter with adjustable scroll speed, fullscreen mode, mirror flip, and keyboard shortcuts. Perfect for speeches, presentations, video recordings, and live streaming.
- Timezone Converter Convert times between different time zones worldwide. API
- Vision Board Create a beautiful vision board to visualize your goals and dreams with text, drawings, images, and progress tracking.
- Voice Recorder Record audio from your microphone and save it as a WebM file.
- Workflow Builder Build business process workflows visually. Add process steps, decisions, and conditions with drag-and-drop.
Showing 9 of 23
SEO Tools 18 tools
Meta tag generators, schema markup, SERP previews, and site optimization.
- Domain Rating Checker Check the Domain Rating (DR) of up to 25 domains at once and export the results. API
- FAQ Schema Generator Generate valid FAQPage JSON-LD structured data for Google rich results. Add question-answer pairs, preview how they appear in search, validate content, and export ready-to-use markup. API
- GEO Analyzer Score any URL for AI search visibility. Checks crawler access for 16 AI bots (GPTBot, ClaudeBot, PerplexityBot, Google-Extended), llms.txt, schema stacking, listicle format, E-E-A-T signals, and 20+ technical checks. Includes compare mode. API
- H1 Checker — Heading Structure Analyzer Paste a page's HTML to check its H1 and full H1-H6 hierarchy: missing or duplicate H1s, skipped levels, empty headings and outline problems. No signup. API
- Hreflang Tag Generator Generate correct hreflang tags for multilingual and multi-region websites. Output as HTML link tags, HTTP headers, or XML sitemap format. Validates self-referencing, reciprocal links, and x-default usage. API
- JSON-LD Generator Generate structured data markup for SEO with JSON-LD format. API
- Keyword Density Checker Analyze keyword density and frequency in your content. Check 1-gram, 2-gram, and 3-gram phrases with density percentages. Optimize your content for SEO without over-stuffing keywords. API
- llms.txt Generator New Build an /llms.txt file for your site: a summary and grouped links in the llmstxt.org format, with the robots.txt and link header lines that point agents to it. API
- Meta Tag Generator Generate the SEO meta tags, Open Graph and Twitter Card markup for your page head, with a live search preview to check the result. No signup required. API
- Open Graph Preview & Debugger Preview how your website looks when shared on Facebook, Twitter/X, LinkedIn, Discord, Slack, and WhatsApp. Validate Open Graph and Twitter Card meta tags with real-time social card previews. API
- Robots.txt Generator Generate valid robots.txt files for SEO with crawler rules and sitemap support. API
- robots.txt Tester New Paste a robots.txt and test whether Googlebot, GPTBot or any user agent may crawl a path, with the rule and line that decided it. API
- SEO Title & Description Writer Write and optimize SEO titles and meta descriptions with real-time character and pixel width counters. Preview Google SERP snippets, detect power words, calculate emotional marketing value, and compare A/B variants side by side. API
- SERP Preview Preview how your page will look in Google search results. Edit title, description, and URL with live rendering, pixel-width counters, and competitor comparison mode. API
- Structured Data Tester Validate JSON-LD structured data and Schema.org markup. Check required and recommended properties, rich result eligibility, and syntax errors. alternative to Google Rich Results Test. API
- URL Slug Generator Generate clean, SEO-friendly URL slugs from any text. Supports bulk mode, stop word removal, Unicode transliteration, custom separators, and full URL preview with CSV export. API
- XML Sitemap Generator Generate valid XML sitemaps instantly. Add URLs manually or import from CSV, set priority, change frequency, and last modified dates. online sitemap builder with sitemap index support for large sites. API
- XML Sitemap Validator New Paste an XML sitemap or sitemap index to find missing or relative URLs, bad lastmod dates, invalid priority and changefreq values and size-limit problems, by line. API
Showing 9 of 18
Network Tools 17 tools
DNS lookup, IP tools, speed tests, SSL checkers, and web utilities.
- Bot Crawl Checker Check if your URL is accessible to 24 search engine crawlers, AI bots, and social media bots. Analyze robots.txt rules and HTTP responses. API
- DNS & WebRTC Leak Test Check if your VPN is leaking your real IP address through DNS or WebRTC side channels.
- DNS Lookup Perform DNS lookups to find A, AAAA, MX, CNAME, NS, TXT, SOA records for any domain. API
- DNS Security Scanner Scan DNS records for security configurations including SPF, DKIM, and DMARC. API
- Email Header Analyzer Trace email routing, extract sender IPs with geolocation, and verify SPF/DKIM/DMARC authentication. API
- HTTP Status Code Lookup Search HTTP status codes by number or description. Get explanations, use cases, and solutions for every status code. API
- Internet Speed Test Test your internet download and upload speeds.
- IP Address Lookup Find location and details of any IP address.
- IP Blacklist Checker Check if an IP is listed on Spamhaus, SpamCop, Barracuda, SORBS, and 8 more DNSBL blocklists. API
- MIME Type Finder Search MIME types by file extension or content type. Find the right MIME type for any file format. API
- Port Reference Guide Interactive reference for common TCP/UDP network ports with security ratings, filtering, and detailed notes. API
- Screen Resolution Detector Detect your screen resolution, viewport size, and device info.
- Security Headers Analyzer Check HTTP security headers for web applications and get improvement recommendations. API
- SSL Certificate Checker Verify SSL/TLS certificates, check expiration dates, and validate chain trust. API
- Subnet Calculator Calculate IPv4 subnet details including network address, broadcast, subnet mask, wildcard, and usable host range from CIDR notation. API
- URL Encoder/Decoder Encode and decode URLs for safe transmission and parsing. API
- WHOIS Lookup Look up domain registration details including registrar, creation date, expiry, nameservers, and DNSSEC status. API
Showing 9 of 17
Text Tools 16 tools
Case converters, word counters, diff checkers, and text formatters.
- Case Converter Switch text case: upper, lower, title, camelCase. API
- Character Counter Count characters with and without spaces and check the limits for X, Instagram, LinkedIn, YouTube, and meta tags. API
- Citation Generator Generate APA, MLA, Chicago, Harvard citations. API
- Diff Checker Compare two texts side by side and highlight differences at character, word, or line level. API
- Duplicate Line Remover Remove duplicate lines from text. Options for case sensitivity, whitespace trimming, sorting, and keeping first or last occurrence. API
- HTML Tag Stripper Remove every HTML tag and keep the text. Block tags become line breaks, common entities are decoded. Same function as the html-strip API. API
- Line Prefix & Suffix Add a prefix, a suffix, or line numbers to every line. Start at any number, pad with zeros, skip blank lines. API
- Markdown Table Generator Create markdown tables visually with import from CSV, JSON, and Excel support. API
- Readability Calculator Analyze text readability with Flesch-Kincaid, Gunning Fog, and SMOG formulas. API
- Reading Time Estimator Estimate reading and speaking time at slow, average, and fast words-per-minute presets. API
- Text Find & Replace Find and replace text with regex support, case sensitivity, whole word matching, and live match highlighting. API
- Text Line Sorter Sort lines A to Z, by length, numerically, reversed, or shuffled. Trim and dedupe options. API
- Text Summarizer Shorten a text by extracting its key sentences. Extractive, not generative, so every sentence is from the source. API
- Tone Analyzer Score tone and sentiment signals with an English keyword lexicon. No AI model. API
- Whitespace Cleaner Trim text, collapse runs of spaces and tabs, remove blank lines, and normalize line endings to LF. Same function as the whitespace-clean API. API
- Word Counter Count words, characters, sentences, and paragraphs, with readability scores and keyword density. API
Showing 9 of 16
Education Tools 15 tools
Flashcards, worksheets, quizzes, rubrics, and lesson planning.
- Attendance Sheet Generator Generate printable attendance tracking sheets for classes. API
- Course Quiz Generator Create course quizzes with LaTeX formula support. Export as PDF or Word for classroom use. API
- Education Suite All-in-one teacher dashboard for student management, attendance, report cards, and more.
- Essay Outline Generator Generate structured outlines for essays with introduction, body, and conclusion. API
- Flashcard Maker Create digital flashcards for studying and memorization. API
- Lesson Plan Template Create structured lesson plans with objectives and activities. API
- Quiz Maker Create interactive quizzes with multiple question types. API
- Report Card Generator Create student report cards with GPA calculation. API
- Research Title Generator Create compelling academic research paper titles in multiple styles. API
- Rubric Generator Create grading rubrics for assessments and evaluations. API
- Seating Chart Maker Create classroom or event seating arrangements visually. API
- Thesis Statement Generator Create strong thesis statements for essays and research papers. API
- Typing Speed Test Test your typing speed and accuracy with 60-second typing challenges.
- Vocabulary Worksheet New Paste a word list and print a spelling worksheet: scramble, missing letters, matching, word search and tracing, with an answer key. API
- Worksheet Generator Generate printable math and educational worksheets. API
Showing 9 of 15
PDF Tools 11 tools
Edit, merge, split, rotate, compress, and organize PDF files.
- Images to PDF Combine JPG and PNG images into one PDF, one image per page, in the order you set. API
- PDF Compress Reduce PDF file size while maintaining quality.
- PDF Delete Pages Remove unwanted pages from your PDF documents. API
- PDF Editor All-in-one PDF tool: merge, split, rotate, delete, compress, organize.
- PDF Merger Combine multiple PDF files into one document securely. API
- PDF Organize Drag and drop to reorder, rotate, or remove PDF pages. API
- PDF Page Numbers Add page numbers to a PDF, with a position, a start value and a title page to skip. API
- PDF Rotate Rotate PDF pages by 90, 180, or 270 degrees. API
- PDF Split Split PDF files into multiple documents by page selection. API
- PDF Text Extractor Extract text, Markdown, JSON with bounding boxes, HTML, CSV, and per-page text from any PDF — 100% in your browser. Your file never leaves the page. Powered by liteparse WebAssembly.
- PDF Watermark Stamp CONFIDENTIAL, DRAFT or your own text across the pages of a PDF. API
Showing 9 of 11
Mockups 9 tools
Generate realistic social media post, story and chat mockups, and device frames for your own screenshots.
- ChatGPT Screenshot Generator Create realistic mock ChatGPT conversations with custom messages and styling.
- Device Frame Mockup New Put any screenshot inside a phone, tablet or browser window frame and download a watermarked PNG.
- iMessage Chat Generator Create realistic mock iMessage conversations with iOS-style bubbles and reactions.
- Instagram Post Generator Create realistic mock Instagram posts with likes, comments, and custom profiles.
- Instagram Story Mockup New Make a mock 9:16 Instagram story with progress bars, text overlays and a reply bar, as a watermarked PNG.
- LinkedIn Post Mockup New Make a mock LinkedIn feed post as a watermarked PNG: author, headline, text, image, reactions and comments.
- Slack Chat Mockup New Make a mock Slack-style channel or DM with reactions and thread replies, as a watermarked PNG.
- Twitter/X Post Generator Create realistic mock Twitter/X posts with likes, retweets, and custom engagement.
- WhatsApp Chat Generator Create realistic mock WhatsApp conversations with read receipts and timestamps.
Can't find the tool you need?
Describe the task and we'll consider it for the next batch of tools.