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Compress a PDF online
Reduce PDF file size so it's easy to email or upload — with adjustable quality, free and private.
How to compress pdf
- Select or drop the PDF you want to shrink.
- Choose a compression level — Recommended works for most files.
- Click “Process” to compress the PDF on your device.
- Download your smaller PDF and see how much space you saved.
✔ No file uploads
✔ Free & unlimited
✔ No watermark
Frequently asked questions
How much can I compress a PDF?
It depends on the file. Image-heavy or scanned PDFs often shrink by 50–80%. Text-only PDFs are already small, so savings are more modest.
Will compressing lower the quality?
Compression is lossy for images: higher levels reduce quality to save more space. Choose “Less” to keep quality high, or “Extreme” for the smallest size.
Why is my compressed PDF not searchable anymore?
Strong compression rasterizes pages into images, which can remove selectable text. Use the lightest level if you need to keep text selectable.
Is the compression done online?
It runs entirely in your browser — your PDF is never uploaded, keeping it private and fast.