Compress PDF
Reduce the size of a PDF file while preserving readability.
Drop files here
or click to browse — up to 50 MB
What is the Compress PDF?
The Compress PDF tool shrinks PDF files by downsampling embedded images, re-encoding them and removing redundant data — while keeping text sharp and selectable. Image-heavy PDFs often shrink 50–90%, which gets scans and brochures under the 5–25 MB caps common on email and government portals.
Pick a quality level to trade size against image crispness, and re-run at a lower setting if the result is still too large.
How to use the Compress PDF
- 1Drop your PDF onto the upload area.
- 2Pick a quality level — lower quality means smaller files.
- 3Click "Compress PDF" and compare the new size.
- 4Download the smaller PDF, or re-run at a lower quality if needed.
Key features
- Adjustable quality vs size trade-off
- Automatic image downsampling and re-encoding
- Removes duplicate fonts, metadata and unused objects
- Text stays sharp and selectable
- Works with scanned and native PDFs
Important notes
- Most size savings come from re-compressing images, so image-heavy PDFs shrink the most while text-only PDFs may barely change.
- Higher compression can slightly reduce image sharpness — check the result if the document contains detailed graphics.
- Compression runs in your browser, so your PDF is not uploaded to a server.
Frequently asked questions
How much can I shrink my PDF?
Image-heavy PDFs often shrink 50–90%; text-only PDFs may only reduce 10–30%.
Can I compress a PDF twice?
You can, but the second pass gives diminishing returns and may visibly reduce image quality.
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