Free Online Developer Tools
Convert, Format & Generate
55+ browser-based utilities — no signup, no uploads.
100% client-side processing. Your data never leaves your device.
All Developer Tools
Free JSON to CSV Converter - Fast Browser Tool
Convert large JSON arrays to CSV format instantly. Free, client-side, secure, and works entirely in your browser.
Free CSV to JSON Converter & Data Migration Tool
Convert CSV data to JSON objects instantly. Free, client-side, and secure migration bridge.
Free Base64 String Encoder - Instant & Secure
Encode text or binary data to a Base64 string instantly in your browser. 100% secure client-side processing.
Free Base64 Decoder - Instant & Offline
Decode Base64 strings back to text instantly. Secure client-side processing.
Free UUID/GUID Generator v4 - Bulk Generation
Generate secure Version 4 UUIDs and GUIDs instantly in your browser. Supports bulk generation.
Fast Online URL Encoder & Percent Encoding Tool
Encode text and special characters for safe use in URLs securely and instantly in the browser.
Free HTML Entity Encoder - Escape HTML Online
Convert special characters to HTML entities for safe display.
Free HTML Entity Decoder - Unescape HTML Online
Convert HTML entities back to readable characters.
Free YAML to JSON Transformer & Converter
Convert YAML configuration files to JSON format instantly. Perfect for DevOps engineers.
Free JSON to YAML Converter - Config File Tool
Convert JSON data to YAML format. Great for config files and DevOps workflows.
Free Markdown to HTML Converter Online
Convert Markdown to clean, semantic HTML instantly in your browser. Supports GitHub Flavored Markdown formatting.
Free Uppercase Text Converter - CAPS Generator
Convert text to UPPERCASE. Perfect for headings and emphasis.
Free Title Case Converter - Capitalize Words
Convert text to Title Case. Capitalize the first letter of each word.
Free HEX to RGB Converter - Color Tool
Convert HEX color codes to RGB values for CSS and design work.
Free RGB to HEX Converter - Color Tool
Convert RGB color values to HEX codes for web development.
Free Image to Base64 Converter - Data URI Generator
Convert images to Base64 encoded strings. Perfect for embedding in CSS or HTML.
Free JSON Beautifier, Formatter & Validator Online
Format, beautify, and validate malformed JSON online instantly. Ensure your config or API response is syntactically valid.
Free Secure Password Generator (Client-Side)
Generate secure random passwords with customizable length and complexity.
Free Lorem Ipsum Generator - Placeholder Text
Generate placeholder text for designs and mockups. Paragraphs or sentences.
Free Hash Generator (MD5, SHA-1, SHA-256)
Generate cryptographic MD5, SHA-1, and SHA-256 secure hashes entirely client-side without sending data.
Free Base64 to Image Converter - Preview & Download
Convert Base64 encoded strings back to images. Preview and download.
Free HTML to Markdown Converter - Clean Output
Convert HTML content to clean Markdown format. Great for documentation.
Free SQL Query Formatter & Beautifier Online
Format and beautify messy SQL queries for better readability. Supports PostgreSQL, MySQL, and more.
Free HTML Formatter & Beautifier Online
Format, indent, and beautify your HTML code instantly for clear readability and debugging.
Free CSS & SCSS Minifier - Compress CSS Online
Minify CSS securely to reduce file size for production. Removes whitespace, comments, and optimizes code.
Free JavaScript Minifier & Compressor Tool
Minify and compress JavaScript code online to reduce bundle size and speed up page load times.
Free Color Palette Generator Tool for UI Design
Generate accessible, harmonious color palettes for your web apps using advanced color theory calculations.
Browser-based JWT Payload Inspector & Decoder
Decode and inspect JSON Web Tokens securely offline. View JWT headers and payload claims instantly.
Free Unix Timestamp Converter - Epoch Tool
Convert between Unix timestamps and human-readable dates.
Free Regex Tester - Live Pattern Matching
Test regular expressions with real-time matching and groups.
Free Text Diff Checker & Code Comparison Tool
Compare two text blocks or source code files side-by-side. Highlight changes, additions, and deletions easily.
Free JSON Diff Tool - Compare JSON Objects Online
Compare two JSON objects semantically. Ignores key order and formatting, highlights nested changes in a tree view.
Free Code Diff Tool - Compare Code with Syntax Highlighting
Compare code with syntax highlighting. Supports JavaScript, Python, TypeScript, Go, and 20+ languages.
Free React PropTypes to TypeScript Converter
Convert React PropTypes to TypeScript interfaces instantly. Perfect for migrations.
Free Tailwind CSS Class Sorter - Auto-Organize
Sort Tailwind CSS classes in recommended order. Keep your codebase consistent.
Free CRON Expression Generator - Natural Language
Build CRON expressions from natural language. "Every Friday at 5pm" → CRON.
Free JSON to TypeScript Interface Generator
Convert JSON to TypeScript interfaces instantly. Auto-generates nested types.
Free JSON to Zod Schema Generator
Generate Zod validation schemas from JSON. Perfect for form validation.
Free QR Code Generator - Instant Download
Generate QR codes from text or URLs. Download as PNG or embed in HTML.
Free URL Slug Generator - SEO Friendly
Convert titles to URL-friendly slugs. Multiple formats: kebab, snake, no-separator.
Free CSS to JS Object Converter - React Styles
Convert CSS to JavaScript objects for React inline styles. Auto camelCase.
Free .gitignore Generator - All Project Types
Generate .gitignore for Node, React, Next.js, Python, Java, and more.
Free Markdown Table Generator - From CSV/JSON
Generate Markdown tables from CSV or JSON data. Copy-paste ready.
Free package.json Generator - All Frameworks
Generate package.json for Next.js, React, Express, Node.js. TypeScript ready.
Nginx Config Generator - Visual Builder
Generate validated nginx.conf blocks with a visual wizard. Configure reverse proxy, SSL, gzip, rate limiting and more.
GitHub Actions YAML Builder - CI/CD Pipeline
Build CI/CD pipelines visually. Generate valid GitHub Actions workflow YAML for testing, building, and deploying.
Kubernetes Manifest Generator - Easy Deploy
Generate K8s Deployment, Service, and Ingress manifests without deep Kubernetes knowledge. Deploy containers easily.
Jira to Linear/Notion Converter - Migrate Projects
Convert Jira CSV exports to Linear or Notion format. Preserves status, priority, labels, sprints, and story points.
Postman to OpenAPI/Swagger Converter
Convert Postman Collection v2.1 to OpenAPI 3.0 YAML. Generate API documentation from your Postman requests.
WordPress to Headless CMS Converter
Convert WordPress XML exports to Contentful, Strapi, or Markdown. Removes shortcodes, cleans HTML, preserves categories.
Free Mock REST API Backend Generator Online
Generate instant mock REST API endpoints from JSON payloads. Perfect for frontend prototyping, testing, and simulating server latency.
Free Mock JSON Data Generator - Realistic Fake Data
Generate large sets of realistic mock JSON data (users, products, etc.) for testing and seeding development databases.
Bigtable Reverse Timestamp Generator
Generate reverse timestamps for Google Cloud Bigtable row keys. Calculates Long.MAX_VALUE - timestamp for descending time order.
Pomodoro Timer - Productivity Scheduler
Generate Pomodoro work session schedules with customizable work and break intervals. Plan your focused work periods.
Chmod Calculator - Unix Permissions
Visual interface to set Unix/Linux file permissions. Generate octal (755) or symbolic (rwxr-xr-x) notation.
SVG Optimizer - Minify & Clean
Optimize SVG files by removing metadata, comments, and unnecessary attributes. Reduce file size without quality loss.
Free Curl to Code Converter - Python, Node.js & More
Convert curl terminal commands into executable Python, Node.js, Java, and Go code snippets instantly.
Fast Online JSON Visualizer & Stream Parser
Visualize streaming AI API responses, chunked data, SSE, and NDJSON payloads directly in the browser.
Code Share - Share Code Snippets via URL
Share code snippets instantly via URL. Supports 20+ languages with syntax highlighting. No account needed - just paste, share, and collaborate.