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Full_Stacker — Sat, 18 Apr 2026 21:23:37 +0000

We all know that moment when you just want to format a JSON response from an API, and somehow you end up with 4 tabs open — one for JSON formatter, one for base64 decoder, one for regex tester, and one you don't even remember opening?

Or when you paste your data into some "free online tool" and it spins for 3 seconds doing a SHA-256 hash... on a server... somewhere... for a string you typed. A string. That your own laptop could hash in microseconds or less.

I got fed up and built

devmesh.me

The rule I set for myself: nothing leaves your browser. Every tool runs 100% client-side. No accounts, no file uploads, no telemetry, no paywalls.

What's there right now
JSON Formatter & Editor
YAML ↔ JSON converter
Diff Checker
Regex Tester
URL Encoder/Decoder
Hash Generator (SHA-256, SHA-512, MD5, HMAC, Base64, JWT)
String Escape (JSON, HTML, JS, URL)
Cron Parser
UUID / ULID / NanoID Generator
Color Converter (HEX, RGB, HSL)
Time Zone Converter
HTML Editor with live preview
What's next
More tools are coming — some obvious, some not. If there's something you keep wishing existed as a quick browser tool, drop it in the comments.

Built with Vue 3 + Vite, deployed on AWS behind Cloudflare.

Would love feedback on anything that feels off or broken.

DEV Community: Full_Stacker

Built a free browser-only dev tools site, no server side slowness, no signup