Developer Tools

Essential tools for developers: code formatters, diff checkers, regex testers, API tools, and debugging utilities for efficient development workflow.

55 tools available

Data Tools 5

Schema Extractor

Generate TypeScript interfaces, JSON Schema, Go structs from JSON or CSV. Extract data schemas automatically. Free online tool.

Data Tools
YAML-JSON Converter

Convert YAML to JSON and JSON to YAML instantly. Free online tool with formatting options. Process data securely in your browser.

Data Tools
JSON Tree Viewer

Free online JSON tree viewer and visualizer. Explore JSON data with interactive collapsible tree structure, syntax highlighting, search, and fullscreen mode. Perfect for analyzing complex JSON APIs, debugging nested data, and understanding JSON structures.

Data Tools
CSV-SQL Converter

Convert CSV files to SQL INSERT/CREATE statements or SQL tables to CSV format. Free bidirectional converter with custom table names and formatting.

Data Tools
XML-JSON Converter

Convert between XML and JSON formats instantly. Free bidirectional converter supporting custom formatting, attributes, and nested structures.

Data Tools

Developer Tools 50

Google Fonts Pair Finder

Discover perfect Google Fonts pairings for your website. Preview heading and body font combinations with live examples. Get instant CSS code for beautiful typography. Free online font pairing tool for web designers.

Developer Tools › Utilities
URL Slug Generator

Free online URL slug generator. Convert text into clean, SEO-friendly URL slugs. Perfect for creating web-safe URLs, permalinks, and file names. Customize separators, case, and formatting options.

Developer Tools › Utilities
HTML Previewer

Free online HTML previewer and sandbox. Write HTML, CSS, and JavaScript code with live preview. Test code instantly with split-screen editor, console output, and fullscreen mode. Perfect for web development and prototyping.

Developer Tools › Testing & Debugging
Robots.txt Tester

Free online robots.txt tester and validator. Test if URLs are allowed or blocked by robots.txt rules for different search engine bots. Perfect for SEO and web developers.

Developer Tools › Utilities
Redirection Rules Generator

Free redirect rules generator for Apache, Nginx, and Netlify. Create 301, 302, 307, 308 redirects easily. Perfect for site migrations and URL changes. Generate .htaccess, nginx.conf, and _redirects files.

Developer Tools › Generators
WebSocket Tester

Free online WebSocket tester tool. Test WebSocket connections, send and receive messages in real-time. Monitor connection status and message history. Perfect for WebSocket development and debugging.

Developer Tools › Testing & Debugging
API Request Tester

Free online API request tester tool. Test REST APIs with GET, POST, PUT, DELETE methods. Send custom headers, request body, and view response data. Perfect for API development and testing.

Developer Tools › Testing & Debugging
User-Agent Parser

Free online User-Agent parser tool. Parse and analyze User-Agent strings to detect browser, operating system, device type, and platform information. Perfect for web developers and testing.

Developer Tools › Utilities
HTTP Header Viewer

Free online HTTP header viewer tool. Check request and response headers, analyze HTTP status codes, cookies, content type, and more. Perfect for debugging web requests and API testing.

Developer Tools › Testing & Debugging
.htaccess Generator

Free .htaccess generator tool. Create Apache .htaccess configuration file with security, URL rewriting, performance optimization, and custom redirects. Easy-to-use interface for webmasters.

Developer Tools › Generators
Base32 Encoder/Decoder

Free online Base32 encoder and decoder tool. Encode text to Base32 or decode Base32 to text instantly. Supports RFC 4648 standard Base32 encoding with optional padding. Perfect for developers working with data encoding, QR codes, and case-insensitive encoding systems.

Developer Tools › Encoding
Base58 Encoder/Decoder

Free online Base58 encoder and decoder tool. Encode text to Base58 or decode Base58 to text instantly. Uses Bitcoin alphabet without confusing characters (0, O, I, l). Perfect for developers working with cryptocurrencies, blockchain, Bitcoin addresses, and human-readable encoding.

Developer Tools › Encoding
Base64 Encoder/Decoder

Free online Base64 encoder and decoder tool. Encode text to Base64 or decode Base64 to text instantly. Supports UTF-8, ASCII, URL-safe encoding and multiple character sets. Perfect for developers working with APIs, data encoding, and web development.

Developer Tools › Encoding
Base85 Encoder/Decoder

Free online Base85 (Ascii85) encoder and decoder tool. Encode text to Base85 or decode Base85 to text instantly. More efficient than Base64 with 25% better compression. Perfect for developers working with PDF encoding, binary data compression, email attachments, and space-efficient encoding.

Developer Tools › Encoding
Bcrypt Hash Generator

Free online Bcrypt hash generator and password encryption tool. Generate secure bcrypt hashes for password storage or verify passwords against existing hashes. Supports customizable salt rounds (cost factor) for optimal security. Perfect for developers implementing secure authentication systems.

Developer Tools › Encoding
C Sandbox

Free online C sandbox to run C code in your browser. Test C programs, learn programming, debug code with instant output using GCC compiler. No installation needed.

Developer Tools › Testing & Debugging
CSS Formatter & Minifier

Free online CSS formatter and beautifier. Format, beautify, and minify CSS code with syntax highlighting. Perfect for web developers and designers working with stylesheets.

Developer Tools › Formatter & Minifier
Cron Expression Generator

Free online Cron Expression Generator and builder. Create, visualize, and validate cron schedule expressions for Linux, Unix, and Quartz with human-readable descriptions. Perfect for developers and system administrators.

Developer Tools › Generators
Cron Expression Parser

Free online Cron Expression Parser and explainer. Parse, validate, and understand cron schedule expressions for Linux, Unix, and Quartz with human-readable descriptions and next run times. Perfect for developers and system administrators.

Developer Tools › Utilities
Favicon Generator

Generate favicon files in all required sizes and formats for your website. Create ICO, PNG, and Apple Touch icons from a single image. Free online favicon maker.

Developer Tools › Generators
HMAC Generator

Free online HMAC generator and HMAC encrypt tool. Generate HMAC (Hash-based Message Authentication Code) with SHA-256, SHA-512, or SHA-1. Create secure message authentication codes for API security, JWT signing, and data integrity verification. Supports hex and base64 output formats.

Developer Tools › Encoding
HTML Entities Encoder/Decoder

Free online HTML entities encoder and decoder tool. Convert special characters to HTML entities (<, >, &, ") or decode entities back to text. Supports named, numeric, and hexadecimal entities. Perfect for web developers, preventing XSS attacks, and displaying HTML code safely.

Developer Tools › Encoding
HTML Formatter & Minifier

Free online HTML formatter and beautifier. Format, beautify, and minify HTML code with syntax highlighting. Perfect for web developers and designers working with HTML markup.

Developer Tools › Formatter & Minifier
Hex Encoder/Decoder

Free online Hexadecimal (Hex) encoder and decoder tool. Convert text to hex or decode hex to text instantly. Supports multiple hex formats: plain, 0x prefix, space-separated. Perfect for developers working with binary data, debugging, color codes, and low-level programming.

Developer Tools › Encoding
Image Base64 Encoder/Decoder

Free online Image Base64 encoder and decoder. Convert images to Base64 strings or decode Base64 to images instantly. Supports JPG, PNG, GIF, WebP, BMP, SVG. Generate data URLs for HTML, CSS, JSON. 100% client-side processing.

Developer Tools › Encoding
JSON Formatter & Minifier

Free online JSON formatter and validator. Format, beautify, minify, and validate JSON data with syntax highlighting. Perfect for developers working with JSON APIs, configuration files, and data structures.

Developer Tools › Formatter & Minifier
JWT Encoder/Decoder

Free online JWT (JSON Web Token) encoder and decoder tool. Create JWT tokens or decode and analyze existing tokens instantly. View header, payload, signature, and claims information. Supports HMAC algorithms (HS256, HS384, HS512). Perfect for developers working with authentication, OAuth, and API security.

Developer Tools › Encoding
JavaScript Formatter & Minifier

Free online JavaScript formatter and beautifier. Format, beautify, and minify JavaScript code with syntax highlighting. Perfect for web developers working with JS files and scripts.

Developer Tools › Formatter & Minifier
JavaScript Obfuscator

Free online JavaScript obfuscator tool. Protect your JavaScript code by obfuscating and encrypting it. Make your JS code unreadable while maintaining functionality.

Developer Tools › Utilities
MD5 Hash Generator

Free online MD5 hash generator and MD5 encrypt tool. Generate MD5 hash from text instantly. Create 128-bit MD5 checksums for data integrity verification, file comparison, and development testing. Perfect for developers needing quick MD5 hash generation.

Developer Tools › Encoding
Manifest Generator

Free online Web App Manifest generator for Progressive Web Apps (PWA). Create manifest.json with app name, icons, theme colors, display modes, and more. Instant generation with customizable options for installable web applications.

Developer Tools › Generators
Markdown Formatter

Free online Markdown formatter and previewer. Format messy Markdown, fix spacing and headings, preview rendering, and convert to HTML. Supports GitHub-flavored Markdown with syntax highlighting and customizable formatting options.

Developer Tools › Formatter & Minifier
Meta Tag Generator

Free meta tag generator tool. Create HTML meta tags for SEO, Open Graph (Facebook), and Twitter Cards. Generate title, description, keywords, and social media preview tags instantly.

Developer Tools › Generators
Morse Code Translator

Free online morse code translator with audio playback. Convert text to morse code and decode morse to text instantly. Includes interactive morse code chart, customizable separators, and sound player. Perfect for learning, communication, and emergency signaling.

Developer Tools › Encoding
PHP Formatter & Minifier

Free online PHP formatter and beautifier. Format, beautify, and minify PHP code with syntax highlighting. Perfect for PHP developers working with server-side scripts.

Developer Tools › Formatter & Minifier
Punycode Converter

Free Punycode converter tool for Internationalized Domain Names (IDN). Convert Unicode domains to ASCII Punycode and decode back instantly. Perfect for domain registration, email systems, and international web development.

Developer Tools › Encoding
Python Formatter & Minifier

Free online Python formatter and beautifier. Format, beautify, and minify Python code with syntax highlighting. Perfect for Python developers working with scripts and applications.

Developer Tools › Formatter & Minifier
Python Sandbox

Free online Python sandbox to run Python code in your browser. Test Python scripts, learn programming, debug code with instant output. No installation needed, works offline using Pyodide.

Developer Tools › Testing & Debugging
Regex Generator

Free online regex generator and tester with visual pattern builder. Create, test, and debug regular expressions easily. Includes pattern library, component builder, syntax highlighting, and code generation for multiple languages. Perfect for developers and data validation.

Developer Tools › Generators
Regex Tester

Free online regex tester tool. Test and debug regular expressions with real-time matching, syntax highlighting, capture groups, and flag support. Perfect for developers working with pattern matching and text processing.

Developer Tools › Testing & Debugging
Robots.txt Generator

Free robots.txt generator tool. Create, test and validate robots.txt file for your website. Control search engine crawlers with easy-to-use interface. SEO optimization tool.

Developer Tools › Generators
SHA-1 Hash Generator

Free online SHA-1 hash generator and SHA-1 encrypt tool. Generate SHA-1 hash from text instantly. Create 160-bit SHA-1 checksums for data integrity verification and development. Fast, client-side SHA-1 hashing.

Developer Tools › Encoding
SHA-256 Hash Generator

Free online SHA-256 hash generator and SHA-256 encrypt tool. Generate SHA-256 hash from text instantly. Create 256-bit SHA-256 checksums for blockchain, Bitcoin, SSL certificates, and secure data integrity. Industry-standard cryptographic hash function.

Developer Tools › Encoding
SHA-512 Hash Generator

Free online SHA-512 hash generator and SHA-512 encrypt tool. Generate SHA-512 hash from text instantly. Create 512-bit SHA-512 checksums for maximum security, data integrity, and cryptographic applications. Most secure SHA-2 family algorithm.

Developer Tools › Encoding
SQL Formatter & Minifier

Free online SQL formatter and beautifier. Format, beautify, and minify SQL queries with syntax highlighting. Perfect for database developers and DBAs working with SQL statements.

Developer Tools › Formatter & Minifier
Sitemap Generator

Free sitemap generator tool. Create XML sitemap for your website easily. Add URLs, set priorities, and generate SEO-friendly sitemap.xml file online.

Developer Tools › Generators
URL Encoder/Decoder

Free online URL encoder and decoder tool. Encode text for URLs or decode URL-encoded strings instantly. Convert special characters, spaces, and Unicode to percent-encoded format. Perfect for web developers working with query parameters, API endpoints, and URL handling.

Developer Tools › Encoding
UUID Generator

Free online UUID/GUID generator. Generate UUID v1, v4, and v5 (Nil UUID) instantly. Bulk generation, copy to clipboard, and download as file. Perfect for developers needing unique identifiers.

Developer Tools › Generators
XML Formatter & Minifier

Free online XML formatter and validator. Format, beautify, minify, and validate XML data with syntax highlighting. Perfect for developers working with XML files, APIs, and configuration.

Developer Tools › Formatter & Minifier
YAML Formatter & Minifier

Free online YAML formatter and beautifier. Format, beautify, and minify YAML code with syntax highlighting. Perfect for developers working with YAML configuration files and data structures.

Developer Tools › Formatter & Minifier