Browse our complete collection of free online tools organized by category. Click any tool to get started instantly.
39 tools
All-in-one PDF tool: merge, split, rotate, delete, compress, organize.
Combine multiple PDF files into one document securely.
Split PDF files into multiple documents by page selection.
Rotate PDF pages by 90, 180, or 270 degrees.
Remove unwanted pages from your PDF documents.
Reduce PDF file size while maintaining quality.
Drag and drop to reorder, rotate, or remove PDF pages.
Boost productivity with timed work sessions.
Online timer with lap times and precision.
Create digital flashcards for studying and memorization.
Generate printable math and educational worksheets.
Create classroom or event seating arrangements visually.
Create interactive quizzes with multiple question types.
Test your typing speed and accuracy with 60-second typing challenges.
Set countdown timers for events, deadlines, and special occasions.
Convert times between different time zones worldwide.
Create grading rubrics for assessments and evaluations.
Generate printable attendance tracking sheets for classes.
Create student report cards with GPA calculation.
Create structured lesson plans with objectives and activities.
All-in-one teacher dashboard for student management, attendance, report cards, and more.
Capture your screen instantly and download or copy screenshots.
Record audio from your microphone and export as MP3 or WAV.
Prioritize development requests using weighted scoring. Track analysis, estimate effort, see what to build next.
Calculate your team's realistic sprint capacity accounting for meetings, PTO, holidays, and historical velocity.
Track and visualize project scope changes over time. Monitor original scope vs additions and generate reports.
Track, prioritize, and communicate technical debt. Log debt items with severity and effort, calculate interest cost.
Generate professional status reports for clients. Track completed work, blockers, and next goals with custom branding.
Estimate user stories asynchronously with shareable links. Use Fibonacci, T-shirt, or custom scales for distributed teams.
Run engaging sprint retrospectives with anonymous feedback. Reveal items one by one and vote on action items.
Generate GDPR, CCPA, and COPPA compliant privacy policies for your website or app.
Plan your social media content with weekly or monthly posting schedules.
Edit CSV and Excel files directly in your browser without uploading to any server.
Create stunning presentations with text, images, and shapes. Export to PDF, PNG, or GIF.
Find keyboard shortcuts for VS Code, Chrome, Excel, Photoshop and more. Search by action name with Mac and Windows keys.
Create a beautiful vision board to visualize your goals and dreams with text, drawings, images, and progress tracking.
Create beautiful mind maps with drag-and-drop nodes. Brainstorm ideas, organize thoughts, and export your mind maps.
Build interactive decision trees with yes/no branches. Visualize decision logic and export flowcharts.
Build business process workflows visually. Add process steps, decisions, and conditions with drag-and-drop.
71 tools
Validate, format, and minify JSON data instantly.
Compress JSON by removing whitespace and formatting.
Escape and unescape JSON strings for embedding in code.
Parse URL query strings and convert them to JSON objects.
Convert JSON objects to URL-encoded query parameters.
Explore JSON interactively and find JSONPath expressions.
Generate clean HTML5 forms from JSON schema definitions.
Create Tailwind CSS styled forms from JSON schemas.
Generate Bootstrap 5 forms from JSON definitions.
Create complete React form components from JSON.
Extract JSON schema from existing HTML forms.
Build form schemas visually without writing JSON.
Beautify and minify HTML code with syntax highlighting.
Convert Unix timestamps to human-readable dates.
Find location and details of any IP address.
Encode and decode text or files to Base64 format.
Minify or beautify CSS code for production.
Format and beautify SQL queries for readability.
Generate SEO meta tags, Open Graph, and Twitter Cards for your website.
Decode and inspect JSON Web Tokens (JWT) instantly.
Build and validate cron expressions with a visual editor.
Test and debug regular expressions with real-time matching.
Write and preview Markdown with live rendering.
Test your internet download and upload speeds.
Perform DNS lookups to find A, AAAA, MX, CNAME, NS, TXT, SOA records for any domain.
Encode and decode URLs for safe transmission and parsing.
Validate email addresses for proper format and syntax.
Detect your screen resolution, viewport size, and device info.
Extract duration, resolution, codecs, and metadata from videos.
Extract metadata, duration, and codec info from audio files.
Extract EXIF data, GPS location, and camera info from images, videos, and audio files.
Convert between JSON and YAML formats instantly with syntax validation.
Validate and format YAML files with syntax checking for Kubernetes and DevOps.
Beautify and minify XML documents with syntax validation.
Generate valid robots.txt files for SEO with crawler rules and sitemap support.
Create beautiful code screenshots with syntax highlighting, themes, and customizable backgrounds.
Convert JSON to TypeScript interfaces or type aliases with customizable options.
Validate and format phone numbers from any country with E.164 and international formats.
Generate Zod validation schemas from JSON data with type inference.
Convert JSON to Go struct definitions with JSON tags and type inference.
Generate Java POJO classes from JSON with Lombok and validation support.
Create Python dataclasses or Pydantic models from JSON data.
Validate JSON data against JSON Schema Draft-07 specifications.
Auto-generate JSON Schema from sample JSON data with customizable options.
Generate realistic fake JSON data with names, emails, addresses, and more.
Compare two JSON objects and highlight differences semantically.
Compare two JSON structures with a git-style unified diff view.
Convert cURL commands to JavaScript, Python, PHP, Go, Ruby, and Node.js code.
Generate realistic fake JSON data with names, emails, addresses, and 40+ field types.
Explore JSON data with an interactive tree view and copy JSONPath expressions.
Free online jq playground to test, filter, and transform JSON data with jq expressions. Real-time results, built-in examples, and cheat sheet.
Generate structured data markup for SEO with JSON-LD format.
Create Schema.org structured data for better search visibility.
Validate OpenAPI 3.x and Swagger 2.0 specifications.
Convert Swagger 2.0 specs to OpenAPI 3.0 format.
Validate GraphQL schema definitions for errors.
Generate TypeScript types from GraphQL schemas.
Convert Postman collections to cURL commands.
Convert HAR files to cURL commands for debugging.
Generate API documentation in Markdown or OpenAPI format.
Render JSON specifications as professionally formatted PDF documents in your browser.
Edit JSON visually with drag-and-drop reordering, inline editing, type conversion, and undo/redo.
Validate and convert phone numbers to E.164 international format with batch support.
Calculate Linux/Unix file permissions with visual grid. Convert between numeric (644) and symbolic (rw-r--r--) formats.
Test glob patterns against file lists in real-time. Supports *, **, ?, character classes, and brace expansion.
Search HTML entities and special characters by name or description. Copy entity codes, hex codes, and characters instantly.
Search HTTP status codes by number or description. Get explanations, use cases, and solutions for every status code.
Search MIME types by file extension or content type. Find the right MIME type for any file format.
Convert between Euler angles, quaternions, and rotation matrices with live 3D preview.
Design entity-relationship diagrams visually. Create database schemas with tables, columns, and relationships.
Design finite state machines with states and transitions. Visualize automata and export state diagrams.
29 tools
Calculate purchasing power and the real value of money over time using historical CPI data. See how inflation affects your savings.
Calculate monthly loan payments, total interest, and amortization schedules for personal loans, mortgages, and auto loans.
Create professional invoices online for free. Add line items, taxes, and download as PDF. Perfect for freelancers and small businesses.
Calculate VAT and sales tax instantly. Add or remove tax from prices, extract VAT amounts. Works with any tax rate worldwide.
Create a debt payoff plan using avalanche or snowball methods. Calculate payoff time, interest saved, and track progress to debt freedom.
Calculate restaurant tips and split bills easily. Determine 15%, 18%, 20% tips and divide costs among multiple people.
Calculate compound interest with daily, monthly, or annual compounding. Visualize investment growth and wealth accumulation over time.
Calculate monthly mortgage payments, total interest, and loan-to-value ratio. Plan your home purchase with accurate payment estimates.
Calculate car loan payments, total interest, and amortization. Factor in down payment, trade-in value, and sales tax.
Calculate savings growth with compound interest and regular contributions. Plan your emergency fund, retirement, or savings goals.
Calculate return on investment (ROI) for stocks, real estate, and business investments. Compare simple and annualized returns.
Plan your retirement with 401(k), IRA projections and the 4% withdrawal rule. Calculate if you are on track for retirement goals.
Calculate credit card payoff time and total interest. See how extra payments can help you become debt-free faster.
Convert salary between hourly, daily, weekly, bi-weekly, monthly, and annual rates. Calculate your true hourly wage.
Calculate investment growth with compound interest and monthly contributions. Project future value of stocks, bonds, and retirement accounts.
Generate loan amortization schedules showing principal and interest breakdown. See how extra payments save money and shorten loan term.
Calculate your net worth by adding assets and subtracting liabilities. Track financial health and debt-to-asset ratio over time.
Calculate home down payment amounts and PMI costs. Compare 3%, 5%, 10%, and 20% down payment options and savings timelines.
Calculate dividend income, yield on cost, and growth with DRIP reinvestment. Plan your passive income from dividend stocks.
Calculate profit margin and markup percentage. Understand margin vs markup difference and set profitable pricing for your business.
Calculate hours worked, overtime pay, and total earnings. Track time for payroll, freelance billing, and contractor invoicing.
Calculate business loan payments, interest, and effective APR. Compare SBA loans, equipment financing, and term loans.
Calculate self-employment tax (15.3%), income tax, and quarterly estimated payments for freelancers, contractors, and gig workers.
Create professional purchase orders (PO) online. Add vendor details, line items, shipping info, and download as PDF.
Calculate mortgage refinance savings and break-even point. Compare current vs new loan to determine if refinancing is worth it.
Calculate how much house you can afford based on income, debts, and DTI ratio. Get a realistic home buying budget.
Calculate your FIRE number for Financial Independence, Retire Early. Plan Lean FIRE, Fat FIRE, or Coast FIRE based on savings rate.
Calculate stock average cost basis using dollar cost averaging (DCA). Track multiple purchases and see your break-even price.
Calculate your break-even point to understand when your business becomes profitable.
37 tools
Convert HTML tables to JSON arrays or objects.
Transform JSON arrays into GitHub-flavored Markdown tables.
Convert PDF pages to high-quality images instantly.
Resize images by percentage or exact dimensions.
Reduce image file size without losing quality.
Convert images between PNG, JPG, WebP, GIF formats.
Convert length, weight, temperature, and more.
Resize images for Facebook, Instagram, Twitter, LinkedIn and more.
Convert numbers between binary, decimal, hexadecimal, and octal.
Convert HTML code to Markdown format instantly.
Convert CSV data to JSON format with customizable options.
Convert JSON data to CSV format for spreadsheets and databases.
Convert images to Base64 encoded strings for embedding.
Convert Excel files (.xlsx, .xls) to CSV format online.
Convert CSV files to Excel format (.xlsx) online.
View, search, sort, and filter CSV files online.
Merge multiple CSV files into one. Combine vertically or horizontally.
Extract specific columns from CSV files and download filtered data.
Cut and trim video clips to specific timestamps. No upload required.
Convert video clips to animated GIFs directly in your browser.
Reduce video file size while maintaining quality. Privacy-focused.
Convert videos between MP4, WebM, and MKV formats.
Change video resolution and dimensions. Browser-based processing.
Rotate videos 90, 180, or 270 degrees instantly.
Extract audio tracks from video files as MP3 or WAV.
Cut and trim audio files to specific timestamps.
Convert audio between MP3, WAV, OGG, and FLAC formats.
Change audio sample rate for compatibility or quality.
Extract subtitle tracks from MKV and MP4 video files.
Convert XML data to JSON format with attribute support.
Convert JSON data to XML format with customization.
Convert PowerPoint presentations to PDF or images. 100% browser-based, no upload required.
Convert Word documents (.docx) to PDF and download as ZIP. 100% browser-based.
Convert any website to clean, readable Markdown format.
Search countries by name, currency, timezone, or capital. Get detailed info cards with flags and contact details.
Convert Markdown to Word (.docx) with custom background, headers, images, and fonts. Download professional documents instantly.
Convert Markdown to PDF with custom background, headers, images, and fonts. Generate styled PDF documents in your browser.
29 tools
Create strong, secure passwords with customizable rules.
Generate MD5, SHA-1, SHA-256 hashes from text.
Generate secure SHA-256 hashes from text and files.
Analyze password security and get improvement suggestions.
Encrypt and decrypt text using AES-256 encryption.
Generate HMAC signatures for message authentication.
Generate secure random keys for APIs and encryption.
Calculate MD5, SHA-1, SHA-256, SHA-512 checksums for files.
Remove metadata from photos to protect your privacy. Strip GPS, camera info, and timestamps.
Check if your passwords have been exposed in known data breaches using k-Anonymity.
Verify SSL/TLS certificates, check expiration dates, and validate chain trust.
Analyze URLs for potential security threats and phishing indicators.
Check HTTP security headers for web applications and get improvement recommendations.
Create encrypted, self-destructing notes with password protection and expiration.
Scan DNS records for security configurations including SPF, DKIM, and DMARC.
Verify email domain security with SPF, DKIM, DMARC, and MTA-STS checks.
Generate PGP keys, encrypt messages, and decrypt content using RSA encryption.
Test and verify TOTP two-factor authentication codes from your authenticator app.
Decode, validate, and analyze JSON Web Tokens for security vulnerabilities.
Create and sign JSON Web Tokens with custom claims and algorithms.
Sanitize user input for HTML, SQL, XSS, and other security threats.
Analyze browser cookies for security attributes like Secure, HttpOnly, and SameSite.
Compare file or text hashes to verify integrity using SHA-256, SHA-512, and more.
Validate passwords against custom patterns, common passwords, and entropy requirements.
Analyze privacy policies for data collection, user rights, and compliance issues.
Visually design load balancer architectures and generate Nginx, HAProxy, and Caddy configuration files.
Calculate IPv4 subnet details including network address, broadcast, subnet mask, wildcard, and usable host range from CIDR notation.
Look up domain registration details including registrar, creation date, expiry, nameservers, and DNSSEC status.
Interactive reference for common TCP/UDP network ports with security ratings, filtering, and detailed notes.
32 tools
Generate QR codes for URLs, text, Wi-Fi, and vCards.
Generate unique identifiers (UUID/GUID) instantly.
Generate numbers, pick from lists, create teams.
Create digital signatures and handwritten-style text.
Create professional email signatures for Gmail, Outlook, and other clients.
Generate trending hashtags for Instagram, Twitter, TikTok, and more.
Add captions and text overlays to your images.
Generate placeholder text for your designs and layouts.
Generate barcodes in Code128 and Code39 formats.
Create placeholder images with custom sizes and colors.
Pick random names from a list for giveaways and selections.
Extract frames from videos as thumbnail images.
Generate beautiful social media cards from JSON data.
Create professional pricing tables from JSON configuration.
Generate e-commerce product cards from JSON data.
Create team member profile cards from JSON data.
Generate customer testimonial cards from JSON data.
Create visual timelines from JSON event data.
Generate interactive charts from JSON data.
Create organizational hierarchy charts from JSON data.
Generate professional invoices from JSON data.
Create professional resumes from JSON data.
Generate HTML email templates from JSON data.
Generate README.md files from JSON project data.
Create optimized YouTube video descriptions with timestamps, links, and SEO keywords.
Create engaging LinkedIn posts using proven templates for thought leadership and engagement.
Create compelling bios for Instagram, Twitter, TikTok, LinkedIn, and YouTube.
Generate engaging captions for Instagram, TikTok, Facebook, and Twitter with hashtags.
Create engaging Twitter/X threads from long-form content with perfect tweet sizing.
Render LaTeX math expressions beautifully with 40+ formula templates. Export as PNG.
Create course quizzes with LaTeX formula support. Export as PDF or Word for classroom use.
Search 3,700+ emojis with fuzzy search. Find by keyword, copy with one click. Includes skin tone variants.
16 tools
Switch text case: upper, lower, title, camelCase.
Count words, characters, sentences, and paragraphs.
Generate APA, MLA, Chicago, Harvard citations.
Analyze text tone, sentiment, and emotional impact of your writing.
Analyze text readability with Flesch-Kincaid, Gunning Fog, and SMOG formulas.
Count characters, words, and spaces in your text with detailed stats.
Estimate how long it takes to read or speak your content.
Create strong thesis statements for essays and research papers.
Generate structured outlines for essays with introduction, body, and conclusion.
Create compelling academic research paper titles in multiple styles.
Summarize long texts into concise versions by extracting key sentences.
Compare two texts side by side and highlight differences at character, word, or line level.
Create markdown tables visually with import from CSV, JSON, and Excel support.
Sort text lines alphabetically, by length, or numerically. Remove duplicates instantly.
Find and replace text with regex support, case sensitivity, whole word matching, and live match highlighting.
Remove duplicate lines from text. Options for case sensitivity, whitespace trimming, sorting, and keeping first or last occurrence.
14 tools
Create stunning images with text, stickers, and filters. No watermark!
Convert HEX, RGB, HSL and generate palettes.
Create beautiful CSS gradients with live preview.
Check color contrast for WCAG accessibility.
Create beautiful CSS box shadows with presets.
Generate harmonious color palettes from any color.
Create trendy glass-effect UI components.
Generate favicons and app icons for all platforms.
Extract dominant colors from images and export as HEX, RGB, CSS, or Tailwind.
Visualize and edit SVG path data with real-time preview and command breakdown.
Find color names from hex codes or search colors by name. Browse all CSS named colors with live previews.
Search icons from FontAwesome, Material Icons, Lucide, and Heroicons by name or keyword. Find the perfect icon instantly.
Upload and inspect GLTF/GLB 3D models with material inspector, animation player, and geometry stats.
Preview PBR texture maps on 3D shapes with tiling controls and environment lighting.
24 tools
Calculate your grade point average easily.
Calculate percentages, increases, and decreases.
Calculate exact age in years, months, and days.
Calculate weighted grades and target scores.
Calculate how long you've been together as a couple.
Calculate how long you've been working at your job.
Calculate your total professional experience across multiple jobs.
Track how your daily habits add up over time.
Advanced calculator with trigonometry, logarithms, and scientific functions.
Calculate the difference between two dates in days, weeks, months.
Calculate daily protein, carbs, and fat needs for your fitness goals.
Calculate your Body Mass Index and understand your weight category.
Calculate and convert aspect ratios for images and videos.
Plan your trip expenses including flights, hotels, food, and activities. Get a complete cost breakdown.
Calculate your optimal daily water intake based on weight, activity, and climate.
Estimate body fat percentage using the Navy method or BMI estimation.
Calculate your annual carbon footprint from home energy, transportation, and lifestyle choices.
Calculate your Total Daily Energy Expenditure based on BMR and activity level for weight management.
Calculate optimal bedtime and wake times based on 90-minute sleep cycles.
Estimate your 1RM for any lift using proven formulas with training weight recommendations.
Measure real-world objects from photos using reference calibration.
Explore and visualize 3D geometric shapes interactively with wireframe, edges, and real-time calculations.
Visualize 3D vectors, calculate dot and cross products, angles, and projections interactively.
Plot 3D mathematical functions z=f(x,y) with interactive surface visualization and color mapping.
5 tools
Create realistic mock Twitter/X posts with likes, retweets, and custom engagement.
Create realistic mock Instagram posts with likes, comments, and custom profiles.
Create realistic mock ChatGPT conversations with custom messages and styling.
Create realistic mock WhatsApp conversations with read receipts and timestamps.
Create realistic mock iMessage conversations with iOS-style bubbles and reactions.