5 Free Browser Tools I Built to Speed Up My Dev Workflow
Source: Dev.to
Every developer has those repetitive micro‑tasks that silently eat hours each week—formatting JSON, debugging regex, decoding JWTs, and more. I got tired of bouncing between random sites full of ads, so I built my own set of free, client‑side browser tools. No signup, no tracking, and zero data ever leaves your machine.
JSON Formatter
A clean formatter with syntax highlighting, validation, and error messages. Paste minified JSON and get a nicely formatted view instantly, all running locally in your browser.
Regex Tester
Real‑time matching with capture‑group highlighting. As you type your pattern, you see exactly what it matches (and what it doesn’t), eliminating the classic “write‑run‑tweak” loop.
JWT Decoder
Paste a JWT and instantly see the decoded header and payload. The UI is clean, there are no server calls, and nothing is stored.
Cron Parser
Paste any cron expression and get a plain‑English explanation plus the next five scheduled run times. No more mental gymnastics with 0 */6 * * 1-5.
Diff Checker
Paste two texts and get a highlighted side‑by‑side diff instantly. Perfect for comparing config files, API responses, or code snippets.
These tools run 100 % client‑side, have zero ads, require no sign‑ups, load fast, and just work.
Explore the full collection of 25+ tools covering security, encoding, CSS, and more at maxmini0214.github.io.
If any of these save you time, a ⭐ on GitHub means a lot. Happy coding!