Developer Tools
That Just Work
Free, fast, client-side utilities for everyday dev tasks. No sign-up. No tracking. No uploads.
Every Tool, Explained
Each one does one thing well. Click to open.
Paste, format, validate and minify JSON. Handles large payloads without hanging. Syntax highlighting and line numbers included.
Write and test regular expressions with real-time match highlighting, capture groups, and flag toggles. JavaScript regex syntax.
Encode text or files to Base64 and decode strings back to plaintext. Useful for data URIs, API payloads and email encoding.
Build linear and radial CSS gradients visually. Drag colour stops, adjust angles, and copy production-ready CSS.
Compare two blocks of text side-by-side with inline diff highlighting. Find changes between config files, API responses or code versions.
Build cron expressions with a visual interface. See the next 5 run times instantly so you know your schedule is right.
Format and pretty-print XML with proper indentation. Useful for SOAP responses, configuration files, and SVG markup.
Generate harmonious colour palettes from a base colour. Export as HEX, RGB, or HSL with contrast ratio checking.
Why QuickDev?
Most free developer tools are ad-plastered wrappers that send your data to someone else's server. QuickDev Tools runs entirely in your browser. Your JSON payloads, regex patterns, and config files never leave your machine. No accounts, no tracking, no data collection.
These are the tools a working developer actually reaches for during the day — not a list of 200 novelty generators built to farm search traffic. Each tool does one thing well, loads instantly, and gets out of your way.
Built by Anthony D Johnson, a senior .NET developer with 9+ years building enterprise software for UK government.