Compress PDF
Make a PDF smaller by re-encoding the images inside it. Text and fonts are left untouched, so the document stays selectable. Files are processed in memory and never written to disk.
By compressing a file you agree to the Terms of Service and the Acceptable Use Policy, and you confirm you hold the rights to what you upload. Files are processed in memory and never stored; see the Privacy Policy.
Free online PDF compressor
Most oversized PDFs are large because of what is embedded in them, not because of the text. A scanned contract, a photo-heavy report or a deck full of screenshots carries images stored at far higher resolution than any page needs. This tool finds those images, re-encodes them, and rebuilds the document around them.
Everything that is not an image is copied across as it was. Fonts, vector drawings and the text layer survive intact, which is why the result is still searchable and why a PDF made entirely of text will come back close to the size it started at.
Frequently asked questions
Is the PDF compressor free?
Yes. Compression is free. There is no signup, and nothing is watermarked or held back behind a paywall.
How much smaller will my PDF get?
It depends entirely on what is inside. Scans and photo-heavy documents often drop by half or more, because the images are re-encoded. A PDF that is mostly text is already compact and will barely change.
Will the text stay selectable?
Yes. Only embedded images are re-encoded. Text, fonts and vector graphics are copied across untouched, so the document stays searchable and selectable.
Does compressing reduce quality?
Images are re-encoded at a lower quality, so yes, for the images. The three presets trade size against how visible that is. An image that would come out larger than the original is left exactly as it was.
Are my files uploaded and stored somewhere?
They are processed in server memory and discarded as soon as the result is returned. Nothing is written to disk or stored.