Is compress PDF free?

Yes, it's free with no sign-up.

How does the compression work?

Each page is rendered and re-encoded as a compressed image, which is effective for scan-heavy or image-heavy PDFs.

Will every PDF get smaller?

Not always. A text-only PDF can grow because its pages become images. It works best on scanned or image-heavy documents.

Does it upload my file?

No. Compression runs on your device; the PDF is never uploaded.

PDF

Compress PDF

Most of the savings come from re-compressing embedded images. If your PDF is text-only, expect modest results. The output is rasterised, so any selectable text in the original becomes part of the image.

Files are processed in your browser. Nothing is uploaded to our servers.

One $7/month plan unlocks every paid tool. Cancel any time.

Shrink a PDF by re-rendering its pages as compressed images at a quality you choose. Free, and done in your browser.

Frequently asked questions

Is compress PDF free?: Yes, it's free with no sign-up.
How does the compression work?: Each page is rendered and re-encoded as a compressed image, which is effective for scan-heavy or image-heavy PDFs.
Will every PDF get smaller?: Not always. A text-only PDF can grow because its pages become images. It works best on scanned or image-heavy documents.
Does it upload my file?: No. Compression runs on your device; the PDF is never uploaded.