About DevToolKit
Free, fast, privacy-first developer tools
Our Mission
DevToolKit exists to give developers a fast, reliable, and completely free collection of everyday utilities. We believe developer tools should be instant, privacy-respecting, and accessible without creating an account or paying a subscription.
100% Client-Side
Every tool on DevToolKit runs entirely in your browser. We do not have a backend server that processes your data. Your JSON, passwords, encoded text, and documents are never transmitted anywhere â they stay on your device. This isn't just a privacy policy claim; it's how the code is architecturally designed.
Our Tools
- JSON Formatter & Validator â Format, minify, and validate JSON
- Base64 Encoder / Decoder â Encode text and files to Base64
- URL Encoder / Decoder â Percent-encode and decode URLs
- Password Generator â Cryptographically secure passwords
- Word Counter â Words, chars, reading time
- Text Case Converter â 11 case formats including camelCase & snake_case
- UUID Generator â RFC 4122 v4 UUIDs in bulk
- Lorem Ipsum Generator â Placeholder text by paragraph, sentence, or word
- HTML Minifier â Compress HTML files
- Text Diff Checker â Compare texts with LCS algorithm
Technology
DevToolKit is built with plain HTML, CSS, and vanilla JavaScript â no frameworks, no dependencies, no build step. This means the site loads instantly, works offline after first visit, and will never break due to a dependency update. The code is designed to be easy to read, extend, and self-host.
Privacy Policy
We do not collect, store, or transmit any user data, inputs, or outputs. We do not use cookies for tracking. We may use standard web analytics (aggregate page view counts) to understand which tools are most popular. No personal information is collected.
Contact
Have a suggestion for a new tool? Found a bug? We'd love to hear from you. DevToolKit is constantly growing â new tools are added regularly based on developer feedback.