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 isn't uploaded to compress it.

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.

Free · runs in your browser · no sign-up to use.

Drop a file here or click to browse

One PDF up to 50 MB · processed in your browser

Quality

Compression works by re-encoding every page as a JPG image and rebuilding a new PDF. Best for image-heavy or scanned PDFs.Selectable text in the original is rasterised. It becomes part of the image.

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 isn't uploaded to compress it.

Related tools

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