devutilixy.com is a collection of browser-based utilities built for developers who want answers instantly — without signing up, without ads following them around, and without their data being sent anywhere.
Each tool started as a personal frustration — the kind of thing you find yourself Googling or pasting into some slow, ad-covered website for the tenth time that month. We built clean, fast replacements that live in your browser tab permanently.
Beautify, minify and validate JSON. Syntax highlighting, clear errors.
Unix epoch ↔ readable date. Live clock, timezone-aware.
Encode or decode Base64 in real time. One-click copy.
Decode header, payload, check expiry. No server calls — ever.
Encode/decode URLs with a bonus query string parser.
Any cron expression → plain English + next 8 run times.
The existing options were slow, full of ads, required logins, or hadn't been updated since 2009. We wanted something that opened instantly, looked sharp, and worked — so we built it ourselves and made it free for everyone.
The JSON you paste, the JWT you decode, the cron expression you test — none of it touches a server. Everything runs in JavaScript locally. Close the tab and it's gone. This is architecture, not marketing.
devutilixy.com has always been free and will stay that way. Every tool, every blog post, every update. We're supported by non-intrusive advertising — no paywalls, no "pro" tiers, no feature locks.
We don't build a profile on you. The only analytics we run are basic page-view counts to understand which tools are most useful. Nothing that identifies you personally.
All tools run entirely client-side. Sensitive data like JWT tokens, API keys, or private JSON structures never leave your machine. This is a deliberate architectural choice.
Pure HTML and JS. No frameworks, no bloat. Loads under 100ms.
No dark patterns, fake "pro" features, or upsell popups.
Once loaded, every tool works without an internet connection.
Semantic HTML, ARIA labels, keyboard navigation throughout.
Every suggestion is read. The best ones become features.
Tools explain what they do. No jargon without context.
Alongside the tools we write practical guides on topics that come up constantly but are poorly explained elsewhere — what */15 * * * * actually means, how JWT tokens work under the hood, or why Base64 is not encryption.
This is a deliberately minimal static website — no frameworks, no build pipeline, no Node.js. Just HTML, CSS, and vanilla JavaScript. Every page is a single file that would work if you opened it locally. Hosted on Vercel's global CDN, served over HTTPS with HTTP/2.
Static sites are fast, secure, cheap to run, and easy to maintain. No backend to attack, no database to breach, no server costs to pass on to users. The best infrastructure is the infrastructure you don't have to think about.
Found a bug? Have an idea for a new tool? We read everything.
Get in touch →