About
DevsToolkit is a free collection of 32 browser-based developer utilities across 10 categories. It exists because too many online tools are slow, ad-infested, or quietly send your data to a server.
Privacy first
Every tool runs entirely in your browser. Your data never leaves your machine — no server calls, no uploads, no exceptions.
Fast and lightweight
No bloated dependencies, no loading spinners on every click. Tools load on demand and work instantly.
No distractions
No ads, no popups, no cookie banners, no account walls. Just the tool you need, ready to use.
Works anywhere
Built as a static site with no backend. Works offline after the first load, on any device with a modern browser.
How it works
Every transformation — formatting, encoding, converting, validating — happens in JavaScript running in your browser tab. The site is pre-built as static HTML and served from a CDN. There is no backend, no database, and no API.
The stack
Next.js, React, TypeScript, Tailwind CSS, shadcn/ui, and Monaco Editor. The entire site uses JetBrains Mono because monospace is the only font developers need.
Got feedback?
Found a bug, want a new tool, or just want to say hi? Head over to the contact page.