Compress PDF
Make a PDF smaller. It never leaves this tab.
Drop a PDF here
or click to choose one from your device
Turn off your wifi and try it.
The compressor came down with this page, like the stylesheet did. Once it is here it works with no connection, because there is nothing to connect to.
No upload, so no deletion policy.
Other tools promise to delete your file in an hour. Your file was never on our disk, so there is no promise to keep.
Check the network tab.
Open your browser's developer tools and compress a file. You will see zero requests. That is the whole claim, and you can verify it yourself.
What gets changed
- Images are recompressed and downscaled.
- Text, vectors and form fields are copied byte-for-byte.
- Page count, order and size never change.
- This file carries a digital signature, and rebuilding it will break that signature. Your original is not modified.
Compressing on your device
0%
- Reading page tree waiting
- Recompressing images waiting
- Rebuilding the file waiting
- Verifying every page is present waiting
Your own machine is doing this work, not a server. Nothing has been sent anywhere, so stopping just stops the work.
Done — on this device
- pages
- —
- images
- —
- text & vectors
- untouched
- metadata
- —
This file was digitally signed. The signature does not survive rebuilding the document, so the saved copy will show as unsigned. Your original is untouched.
Doing this at work? We are asking firms what they need.
Nothing worth saving
This file is already about as small as a PDF of these pages gets.
Compressing again from the result you already have does not help: the second pass re-encodes an already-encoded image and usually makes it look worse without making it smaller.
Questions
Is it safe to compress a PDF online?
Nothing is uploaded, so there is no copy on a server to trust. The counter at the foot of this page shows bytes sent, and it stays at zero.
Does this work offline?
Yes. Turn off your wifi and reload the page — it keeps working.
Is there a file size limit?
60 MB. Past that a browser tab stops being able to write the finished file out and sits unresponsive for minutes — it does not crash, it stops being usable — so we refuse rather than hang.
Do I need an account?
No. There is nothing to sign in to, and no limit on how many files you run through it.
Is there a watermark?
No. Nothing is added to the file.
What happens to my file?
It stays on your device. The counter at the foot of every page shows bytes sent and third-party requests, so you can check that rather than take our word for it.