Category · 19 tools
Free Developer Tools for Code, Formatting & Utilities
Essential utilities for developers: format and minify code, generate secure hashes and UUIDs, decode JSON Web Tokens, convert timestamps and color formats, and test regex patterns—all instantly in your browser, no installation required.
All developer tools (19)
Developer reference cheatsheets
Format, Minify & Transform Code
Formatting and minification are routine in development work. Our HTML, CSS, and JavaScript tools let you beautify unreadable code for debugging or minify it for production without leaving your browser. Paste your code, adjust settings, and copy the output—nothing is sent to a server. The same applies to SQL: format queries for readability or compress them for queries that process large datasets. These transformations run entirely client-side, so your code never leaves your machine.
Color format conversion sits in this space too. Convert between HEX, RGB, and HSL depending on your design system's needs. A single click translates #FF5733 into rgb(255, 87, 51) or hsl(9, 100%, 60%). Developers and designers alike use these routinely when syncing between stylesheets, design tools, and browser DevTools.
Generate & Decode Hashes, Tokens & Identifiers
Password hashing and data integrity checks are fundamental to backend work. Our hash generators produce SHA256, SHA1, and MD5 digests from any input—useful for checksums, cache busting, or verifying file integrity. JWT Decoder extracts claims and headers from tokens without validating signatures, saving time during API debugging. UUID and Timestamp generators create unique identifiers and convert between Unix time and human-readable dates, essential for logging, databases, and API payloads.
Test, Parse & Validate Patterns
Regular expressions are powerful but notoriously hard to get right. Our Regex Tester lets you build and test patterns against sample text instantly, showing matches and groups as you type. Cron Expression Generator guides you through building valid cron schedules without memorising the syntax. Both tools reduce the trial-and-error cycle that typically happens in a text editor or terminal.
Lorem Ipsum Generator provides placeholder text in any quantity for mockups and testing layouts. All these tools share a philosophy: they do one thing well, run client-side, and avoid server dependencies. No sign-up, no tracking, no uploads. Whether you're debugging, documenting, or prototyping, you work at the speed of your browser.
Frequently asked questions
Is my code private when I use these tools?
Yes. Every tool runs entirely in your browser. Code, hashes, tokens, and passwords are processed client-side only and never sent to our servers or logged. You can verify this by opening DevTools or disconnecting from the internet after the page loads.
Do I need to sign up or install anything?
No. All 19 tools are free and work immediately in your browser without signing up or downloading software. Each tool is self-contained, so you can access exactly what you need in seconds.
Can I use these tools offline?
Once the page has loaded, most tools continue to work offline since they process data locally. However, reliability is best when online. Bookmark or screenshot the URL to access the tool whenever you need it.
What's the difference between SHA256, SHA1, and MD5?
SHA256 is cryptographically secure and the industry standard for passwords and digital signatures. SHA1 is older but still used in legacy systems. MD5 is weak against collisions and should not be used for security-critical data. Choose based on your system's requirements.