I put together a set of browser-based developer tools at usedevdash.dev. Here's the full list:
- JSON formatter/validator/minifier
- Base64 encoder/decoder
- JWT decoder
- Hash generator (MD5, SHA-1, SHA-256, SHA-512)
- UUID v4 generator
- URL encoder/decoder/parser
- Regex tester with match highlighting
- Unix timestamp converter
- Password generator
- SQL formatter
- Cron expression parser
- Markdown preview (GFM)
- Color converter (HEX/RGB/HSL)
- Text diff
- QR code generator
- Lorem Ipsum generator
- AI content detector
How it works: Everything runs client-side. You can open the network tab while using any tool — zero requests go out. Your data stays in the browser.
API: Every tool also has a REST endpoint. curl -H "X-API-Key: your_key" https://usedevdash.dev/api/json -d '{"input": "{\"a\":1}"}' returns formatted JSON. Free tier is 1,000 requests/day.
Stack: Next.js 16, Tailwind v4, Vercel. Static pages, no database for the tools themselves.
If there's a tool you use daily that's not on the list, let me know.
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