Merge, split, and compress PDFs in your browser
Browser PDF tools for merge, split, compress, PDF to JPG, and JPG to PDF. Nothing is uploaded.
#javascript
Posts tagged #javascript
Unix Timestamp Converter That Runs in Your Browser
I still decode Unix timestamps from APIs more often than I expect. created_at: 1729000000exp: 1735689600 The number is fine. The question is always the same: does this “free converter” upload what I p
KeptTools: browser-only developer tools that don’t upload your paste
KeptTools: browser-only developer tools that don’t upload your paste I build a lot of small utilities into my day: format JSON, clean SQL, peek at a JWT, encode Base64, generate a hash, compress an im
How to prove an online JWT tool isn’t stealing your token
Most free JWT decoders ask you to paste a token. That’s a trust problem. Tokens can include emails, roles, and session data. If the page uploads it, you just gave secrets to someone else’s server. Her
That API Timestamp Looks Like Nonsense — Here’s How I Read It in the Browser
If you work with APIs long enough, you eventually get a field like this:1729000000 Is that seconds? Milliseconds? Yesterday? Next week? I got tired of guessing — and tired of pasting values into ran
I Got Tired of “Free Tools” That Upload My Files — So I Built Browser-Only Ones
Most “free online tools” ask you to paste text or upload a photo. What they don’t always make clear: that content often leaves your device. For JSON with client data, a JWT, a draft you’re not ready t
