Compress PDF
Shrink a PDF, losslessly or aggressively.
Runs entirely in your browser. Verify it in your network tab.
Strong re-encodes each page as an image. Much smaller, but text stops being selectable or searchable.
Strong mode only.
What this does
Lossless mode repacks the file structure with object streams. That is safe, but the saving is usually small, and close to zero on image-heavy files. Strong mode renders each page and re-encodes it as a JPEG, which shrinks scanned documents dramatically at the cost of selectable text.
Limits
- Strong mode makes text non-selectable and non-searchable.
- Lossless mode often saves only a few percent. That is the honest ceiling for structural compression.
Is this private?
Yes, and you can check rather than take our word for it. Open your browser's network tab and run the tool: your file never appears in it, because there is no server to send it to. The whole site is static files.