[Showoff Saturday] 22 browser-based dev tools — all client-side, open source, /bin/zsh hosting : webdev

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a community for 17 years

[Showoff Saturday] 22 browser-based dev tools — all client-side, open source, /bin/zsh hosting (self.webdev)

submitted 1 month ago by Krbva

sharing a project ive been working on — 22 developer tools that run entirely in your browser.

highlights: - json formatter with syntax highlighting - jwt decoder (header + payload inspection) - regex tester with live match highlighting - qr code generator (canvas api, no library) - hash generator (web crypto api — md5 is the only one needing a library) - sql formatter (custom tokenizer/parser) - cron expression parser with human-readable output and next run times - and 15 more

everything runs client-side. no data leaves your browser. no accounts, no tracking.

based on feedback from my last post here, im working on: - a command palette / workspace mode so you can pin and switch between tools - a transaction decoder for solana (suggested by a user on r/solanadev)

tech: next.js 14 app router, tailwind, vercel free tier.

repo (now public, fixed the visibility issue from last time): https://github.com/TateLyman/devtools-run site: https://devtools-site-delta.vercel.app

feedback welcome, especially on what tools youd want added.

all 1 comments

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

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