keptlocal
Files never leave your browser

Your files.
Kept local.

Free PDF and image tools that run entirely in your browser. No uploads. No accounts. No tracking.

22 free tools Zero file uploads 100% client-side
keptlocal.com/merge-pdf

3 files added

contract.pdf 1.2 MB
nda-signed.pdf 340 KB
appendix.pdf 890 KB
Merging in your browser… Done
merged-document.pdf · 2.4 MB Save
0 bytes sent to any server · verified via Network tab
No uploads
Files never leave your device
No accounts
Open a tool, use it, done
Instant results
Runs locally on your CPU
Always free
No paywalls, no watermarks

Why "kept local"
matters

Verify it yourself
Open DevTools → Network tab, run any tool, watch zero requests fire.
Works offline
After the page loads, disconnect your internet. Tools still work.
Sensitive documents stay private
Contracts, tax returns, medical scans — none of it hits a server.

Most online PDF tools upload your file to their server, process it, and send it back. Your contract, your tax return, your medical scan — all of it travels through someone else's pipeline, where it can be logged, cached, or stored longer than promised.

keptlocal works differently. The tools run inside your browser using WebAssembly. Your file enters memory, gets modified, and the result downloads — without a single byte ever leaving your device.

100% local

From the blog

Guides on PDF privacy, image formats, and browser security