45 Tabs I Stopped Opening

The JWT decoder I used to reach for sent the token to a server. I noticed because I had DevTools open for something else and saw the POST. A JWT often carries user IDs, emails, roles, expiration data. I'd been pasting production tokens into a stranger's endpoint for months. That was the first tool I built for the toolkit . The rest followed the same pattern: I needed something, the available options were ad-heavy or required sign-up or made network calls that didn't need to happen. A Base64 encoder doesn't need a backend. Neither does a regex tester, a color converter, or a hash generator. There are 45 tools now. No sign-up, no tracking, no data collection. Most run entirely in the browser — a few like DNS Lookup and SSL Checker need a server call by nature. The Catalogue Encoding — Base64 , JWT Decoder , Image to Base64 , Encrypt / Decrypt , Hash Generator JSON & YAML — JSON Formatter , JSON ↔ YAML , YAML Validator Markdown — Markdown Preview , Text Diff , HTML ↔ Markdown , Markdown t