Free Developer Tools

All developer tools

• AI Rewriter — Rephrase any text in seven tones — professional, casual, academic, confident, friendly, persuasive, or simple. Length control, style…
• ASCII Art Generator — Convert text to ASCII art with 19 figlet fonts — Standard, Big, Slant, Banner, Doom, Star Wars, and more. Adjustable width and alignment.
• Aspect Ratio Calculator — Calculate and output CSS aspect-ratio with modern and legacy support
• Barcode Generator — Generate CODE128, EAN-13, UPC-A, CODE39, ITF-14, MSI, Pharmacode, and Codabar barcodes. Download as SVG or PNG. Runs entirely in your…
• Base64 Encoder — Encode and decode text or files to/from Base64
• Binary Translator — Convert text to binary and back with ASCII, UTF-8, or UTF-16 encoding. Adjustable bits-per-char, group separators, and parallel decimal/hex…
• Bulk Image Compressor — Compress and optimize images to reduce file size without losing quality. Supports JPEG, PNG, and WebP formats.
• Code Minifier — Minify HTML, CSS, and JavaScript code to reduce file size. Improve website performance by removing whitespace and comments.
• Code Typing Speed Test — Test your coding typing speed with real code snippets in multiple programming languages
• Color Contrast Checker — Check WCAG 2.1 contrast ratios between any two colors. Real-time AA/AAA compliance for normal text, large text, and UI components. Includes…
• Color Tools — Convert colors, generate palettes, check contrast.
• Credit Card Generator — Generate Luhn-valid test credit card numbers for payment-gateway development. Visa, Mastercard, Amex, Discover, Diners, JCB. Not real cards.
• Cron Expression Builder — Build and validate cron expressions with visual interface
• CSS Animation Generator — Build complex CSS keyframe animations visually with timeline editor and live preview
• CSS Grid Playground — Build CSS Grid layouts with subgrid support. Interactive visual editor for grid template columns, rows, areas, and gaps.
• CSS to Tailwind Converter — Convert vanilla CSS to Tailwind CSS utility classes with intelligent property mapping
• CSV ↔ JSON Converter — Convert between CSV and JSON with table preview
• Easing Generator — Create smooth CSS animations with interactive cubic-bezier curve editor and live preview
• Elementor Widget Builder — Build custom Elementor widgets visually with drag-and-drop controls and instant PHP code generation
• Email Signature Generator — Build HTML email signatures for Gmail, Outlook, and Apple Mail. Five templates, table-based layout, no tracking, copy-ready.
• Emoji Picker — Searchable emoji picker — filter by keyword or category, click to copy. Recent picks saved locally for fast access.
• Favicon Generator — Generate all favicon sizes from a single image. Includes Apple Touch icons, Android Chrome icons, and HTML code snippet.
• Flexbox Playground — Visual CSS Flexbox editor with live preview. Build responsive layouts with an intuitive interface for all flexbox properties.
• Focus State Generator — Create accessible focus indicators with WCAG compliance checking and multiple style options
• Hash Generator — Generate MD5, SHA-256, SHA-512 hashes
• HTML Entity Encoder — Convert special characters to/from HTML entities
• HTML Formatter & Beautifier — Pretty-print or minify HTML with configurable indent, wrap, and newline handling. Powered by js-beautify — the same formatter built into VS…
• Icon Finder — Search and compare icons across libraries
• Image Cropper — Crop images to any dimensions with an interactive drag-and-drop tool. Lock aspect ratios for social media, thumbnails, or profile pictures.…
• Image Format Converter — Convert images between PNG, JPG, WebP, and AVIF formats with batch processing, quality control, and transparency preservation.
• Image Resizer — Resize images to exact dimensions with social media presets for Instagram, Facebook, Twitter, LinkedIn, and YouTube.
• Image to Base64 Converter — Convert images to Base64 strings for CSS, HTML, and Markdown embedding. Supports bidirectional conversion back to image files.
• JSON ↔ YAML Converter — Convert between JSON and YAML formats
• JSON Formatter — Format, validate, and transform JSON data
• JWT Decoder — Decode and inspect JSON Web Tokens
• Line Sorter — Sort and deduplicate text lines
• Linux to Windows Command Converter — Convert Unix/Linux terminal commands to Windows CMD and PowerShell equivalents. Handles curl, line continuations, variables, quotes, and…
• Lorem Ipsum Generator — Generate placeholder text for mockups
• Markdown Preview — Write and preview Markdown with GFM support
• Markdown Table Generator — Build GitHub-flavored markdown tables visually. Edit cells inline, set per-column alignment, import from CSV, and export clean markdown or…
• Meta Tag Generator — Generate SEO-optimized meta tags for your website with live Google search preview
• Morse Code Translator — Translate text to Morse code and back with a built-in Web Audio player. Configurable dot/dash symbols, word separator, WPM speed, and pitch.
• Number Base Converter — Convert between binary, octal, decimal, hex
• Open Graph Generator — Generate Open Graph and Twitter Card meta tags for beautiful social media sharing
• Password Generator — Create secure random passwords
• PDF to PNG Converter — Extract PDF pages as high-resolution PNG images. Page-range selection, DPI control (72-600), ZIP export of all pages. Client-side via…
• PNG to PDF Converter — Combine PNG and JPEG images into a single PDF. Multi-file drag-and-drop, reorder, page size / orientation / fit controls. 100% client-side.
• QR Code Generator — Create QR codes for URLs, text, and more
• Random Color Generator — Generate random color palettes with mode control — pastel, vivid, muted, warm, cool, and more. Output HEX, RGB, HSL, Tailwind, or CSS…
• Random Number Generator — Generate random numbers within any range — integers or decimals, unique or repeats, bulk up to 10,000. Uses crypto.getRandomValues for…
• Random Phone Number Generator — Generate random format-valid phone numbers for test data, UI mockups, and form validation. Supports US, UK, CA, AU, IN, DE, and FR formats.
• Random String Generator — Generate bulk random strings, tokens, and IDs with any charset. Cryptographically secure via Web Crypto API, outputs to plain text, JSON,…
• Regex Tester — Test and debug regular expressions
• Responsive Checker — Test websites across multiple devices with live preview and screenshot capture. View how your site appears on mobile, tablet, and desktop…
• robots.txt Generator — Create and customize your robots.txt file with templates for WordPress, eCommerce, and more
• Schema Markup Generator — Generate structured data (JSON-LD) for rich snippets in Google search results
• Scrollbar Customizer — Create custom CSS scrollbar styles with live preview for Webkit and Firefox browsers
• SQL Formatter — Format and beautify SQL queries for multiple databases
• SVG ↔ PNG Converter — Bidirectional converter for SVG and PNG. Generate high-resolution PNGs from SVGs at any scale, or vectorize PNGs into SVG paths.
• SVG Optimizer — Optimize and compress SVG files.
• Text Case Converter — Transform text between 12+ case styles
• Text Cleaner — Remove extra whitespace, duplicate lines, empty lines, and clean up messy text
• Text Diff / Compare — Compare two texts with side-by-side or unified diff view
• Text Reverser — Reverse characters, words, lines, or sentences in any text. Emoji-safe, multi-byte aware, with optional case swapping. Runs entirely in the…
• Title Case Converter — Convert text to title case using AP, Chicago, or Wikipedia rules. Includes sentence case, camelCase, snake_case, kebab-case, and…
• Transform Visualizer — Interactive 2D and 3D CSS transform generator with visual preview and matrix output
• Typography Scale — Generate harmonious type scales for design systems
• Unicode Font Generator — Convert text to Unicode font styles - Bold, Italic, Cursive, Fancy, and more
• Unix Timestamp — Convert between Unix timestamps and dates
• URL Encoder/Decoder — Encode and decode URLs with query parsing
• URL Slug Generator — Create SEO-friendly slugs from text
• UUID Generator — Generate unique identifiers (v4) in bulk
• Website UI/UX Analyzer — Analyze any website for accessibility issues, UI design problems, and UX improvements with AI-powered insights and actionable…
• Wireframe Generator — Generate low-fidelity wireframes instantly with AI. Describe your website layout and get clean HTML/CSS & React code with placeholder…
• Word Counter — Count words, characters, sentences, paragraphs, and get reading time estimates
• WordPress Favicon Generator — Generate favicons and site icons for WordPress themes - supports all devices, WordPress Customizer, and theme integration.
• WordPress Image Compressor — Optimize images for WordPress websites - compress JPG, PNG, WebP images to reduce load times and improve SEO performance.
• XML Formatter & Validator — Pretty-print or minify XML with live well-formedness validation. Uses the browser DOMParser and js-beautify — nothing is uploaded.
• YAML Formatter & Validator — Validate and pretty-print YAML documents with strict YAML 1.2 parsing. Includes key sorting, flow-level control, and one-click conversion…