I kept pasting JSON, JWTs, and config into random online formatters and
realized I had no idea what those sites did with it. So I built RVUtils: 13
everyday dev tools (JSON/XML formatter, JWT decoder, Base64, URL encoder,
regex tester, MD5/SHA/HMAC hashes, UUID v4/v7, color + WCAG contrast, Unix
time, timezone converter, text diff) that run entirely in the browser — no
server round-trip, no account, no ads.
Everything is client-side, so you can paste a production token or a config
file without it leaving your machine. It's open to use in 7 languages.
Stack: React + Vite, prerendered per-locale for SEO, served static behind
Cloudflare. Happy to answer anything about the tools or the privacy model.
Link each tool with a descriptive anchor (e.g. "online regex tester") — descriptive anchors help the target pages.
Top comments (0)