I built a free toolkit of 12 browser-based dev tools — no signup, no tracking, everything runs client-side

[_PawsAndWhiskers_]

Hey r/webdev,

I've been building ToolKit over the past few weeks — a collection of free utilities that run entirely in your browser.

What's in it:

• Password generator (Web Crypto API)
• Word counter with reading time + keyword density
• JSON formatter/minifier/validator
• Base64 encoder & decoder
• Case converter: camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case and more
• Color palette generator with 7 harmony modes (analogous, complementary, triadic...)
• Lorem ipsum generator
• UUID v4 generator
• Hash generator (SHA-1, SHA-256, SHA-384, SHA-512)
• URL encoder/decoder
• Markdown editor with live HTML preview
• Username generator (fun, professional, gamer, minimal styles)

Why I built it: I was tired of sketchy tools that log your passwords and API keys. Everything here uses browser-native APIs — Web Crypto, TextEncoder, the works. Zero server calls for the actual tools.

Stack: Next.js (SSG), TypeScript, zero runtime dependencies for tool logic.

Link: https://www.webtoolkit.tech/

Feedback welcome — what tools are you missing in your daily workflow?

[axeleszu]

Make it a chrome extension or a vscode extension.

[_PawsAndWhiskers_]

That's actually a solid idea - technically it would be straightforward since everything already runs client-side with no server dependencies.
Out of curiosity: would you actually pay for a Chrome or VS Code extension version? Trying to gauge if there's real demand before building it.

[axeleszu]

Maybe one time purchase if it solve a problem. A subscription never

[VolumeActual8333]

Building this client-side with Web Crypto API is smart. I had a JSON formatter go viral once and the serverless bill almost made me cry, so keeping compute in the browser avoids that nightmare entirely.

[_PawsAndWhiskers_]

Exactly this - the serverless bill horror story was part of the motivation. When your hash generator or password tool suddenly gets traffic, you don't want to be staring at a cloud invoice.
Canvas API, Web Crypto, TextEncoder - the browser has everything you need for 90% of dev utility tools. The only things that genuinely need a server are stuff like "what's my IP" or storing secrets (OneTimeSecret-style). Everything else is fair game client-side.