Compress a PDF
Reduce the file size of a PDF so it fits email attachments and upload limits — while keeping it readable.
or drop it here
Files stay on your device.
How to compress a PDF
- 1Choose the PDF you want to shrink.
- 2Pick a compression level: Light, Recommended, Strong, or Maximum.
- 3Click Compress PDF and download the smaller file.
Why use this tool
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Smart image optimisation
Oversized photos are scaled to a sensible resolution and re-encoded; text and vector graphics stay sharp.
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Removes dead weight
Unused objects, old revisions and embedded thumbnails are dropped automatically.
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Compressed locally
Your PDF is optimised in the browser. It is never uploaded to a server.
Frequently asked questions
How much smaller will my PDF get?
It depends on the content. PDFs full of photos or scans often shrink by 50–90 %. Text-only PDFs are usually already small.
Will the text still be selectable?
Yes, at the Light, Recommended and Strong levels. Only the Maximum level turns pages into images.
What if the PDF doesn’t get smaller?
Then it was already well optimised. You’ll be told, and you can try a stronger level.