Your Digital Treasure Chest of Developer Tools
Free online tools for developers and creators. 310+ utilities including code formatters, image editors, converters, and generators. All tools run directly in your browser - your data never leaves your device.
Why Choose Treasure Tools?
Built for developers who value speed, privacy, and simplicity.
Lightning Fast
Most tools run entirely in your browser. No server uploads, no waiting. Get instant results every time.
Privacy First
Your data stays on your device. We don't store, track, or sell your information. Ever.
Always Available
Access your favorite tools from anywhere, anytime. Works offline after the first visit.
Browse by Category
Find the perfect tool organized by what you need to accomplish
Code Formatters
Beautify and format your code with proper indentation and syntax for HTML, CSS, JavaScript, and more
7 tools available
Code Minifiers
Compress and minify your code to reduce file size and improve page load performance
4 tools available
Code Converters
Convert between different code formats and programming languages instantly in your browser
17 tools available
JSON Tools
JSON formatting, validation, and manipulation
17 tools available
CSS Tools
CSS formatting, generation, and utilities
18 tools available
Image Tools
Edit, convert, and optimize images online — resize, crop, compress, and transform image files
21 tools available
Text Tools
Manipulate, analyze, and transform text — word count, case conversion, sorting, and more
57 tools available
Encoding / Decoding
Encode and decode data in Base64, URL, HTML entities, and other common encoding formats
20 tools available
Hash & Crypto
Generate hashes (MD5, SHA-256, SHA-512) and use cryptographic tools for data integrity
7 tools available
Color Tools
Color conversion, palette generation, and picker tools — HEX, RGB, HSL, and more
14 tools available
Web & SEO
Web development and SEO utilities — meta tag generators, link checkers, and site analyzers
39 tools available
Data / JSON
JSON and data manipulation tools
15 tools available
Calculators
Various calculators for math, finance, age, percentage, and everyday computations
56 tools available
Generators
Generate passwords, UUIDs, lorem ipsum, QR codes, and other useful content instantly
57 tools available
Email Tools
Email validation, deliverability, and configuration
12 tools available
Unit Converters
Convert between different units of measurement
24 tools available
Date & Time
Date calculations, timezones, and timers
17 tools available
Developer Tools
Utilities for software developers — regex testers, diff checkers, JWT decoders, and more
45 tools available
AI-Powered
Tools powered by artificial intelligence — code review, content generation, and smart automation
21 tools available
Social Media
Social media utilities — Open Graph preview, Twitter card generator, and sharing tools
11 tools available
Document Tools
PDF editing, document conversion, and file processing
20 tools available
Trending Tools
The most used tools by our community of developers
HTML Beautifier
Format and indent HTML code online for better readability. Free HTML beautifier with syntax highlighting and auto-indentation.
Code FormattersCSS Beautifier
Format and indent CSS code online for cleaner stylesheets. Free CSS beautifier with proper indentation and syntax organization.
Code FormattersJavaScript Beautifier
Format and indent JavaScript code online for improved readability. Free JS beautifier with auto-indentation and clean output.
Code FormattersJSON Beautifier
Format and indent JSON data online with proper syntax highlighting. Free JSON beautifier with validation and tree view support.
Code FormattersXML Beautifier
Format and indent XML data online with proper nesting and syntax highlighting. Free XML beautifier with validation support.
Code FormattersSQL Beautifier
Format and beautify SQL queries online for better readability. Free SQL formatter with keyword highlighting and proper indentation.
Code FormattersHTML Minifier
Compress and minify HTML code online to reduce file size. Remove whitespace, comments, and redundant attributes for faster loading.
Code MinifiersCSS Minifier
Compress and minify CSS code online to reduce file size. Remove whitespace, comments, and shorten selectors for faster page loads.
Code Minifiers“The most comprehensive collection of developer tools I've found. Fast, free, and respects my privacy.”
Trusted by thousands of developers worldwide
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Explore All 310+ ToolsFree Online Developer Tools at Treasure Tools
Welcome to Treasure Tools, your ultimate destination for free online developer tools. We offer over 310 utilities designed to make your development workflow faster and more efficient.
Our collection includes code formatters and beautifiers for HTML, CSS, JavaScript, JSON, and more. Need to minify your code for production? Our minification tools compress your files while maintaining functionality.
For designers and content creators, we provide powerful image tools including format converters, resizers, compressors, and even AI-powered background removal. All processing happens in your browser, ensuring your images stay private.
Developers love our encoding and decoding tools for Base64, URL encoding, JWT tokens, and more. Our hash generators support MD5, SHA-1, SHA-256, and bcrypt for secure password hashing.
Whether you're formatting code, converting data, generating passwords, or calculating colors,Treasure Tools has the right tool for your needs - completely free, with no sign-up required.