300+ Dev Tools, Zero Servers: Building a 100% Client-Side Offline Workstation For Free
Every software engineer knows the ritual: you need to decode a JWT token, format a messy 500-line JSON payload, test a regex, or hash an API key.
What do you do? You open Google, click the first search result, and paste your data.
A few months ago, I paused before pasting a production authorization payload into a random online decoder. I opened DevTools Network tab on that site and watched in disbelief as it fired a POST request with my decoded header and claims straight to an unknown analytics and tracking server.
Think about what engineers routinely paste into random web utilities:
- Auth headers with active Bearer tokens
- Database connection strings and SQL dumps
- Sensitive company API payloads
- Private keys and SSL certificates
Most of the popular "free online developer tools" are riddled with ad scripts, tracking beacons, cookie consent popups, or hidden backends.
I decided I had enough of...
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