Compress a PDF, Free — Right in Your Browser
Shrinks the photos in your PDF down to a lower resolution and quality — your text, signatures, and vector content stay untouched. See the real before/after size before you download, not a guess.
Select a PDF to Compress →How it works
Select your PDF
Compress is pre-selected
Check the real before/after size
Download
Why compressing locally matters
This editor
- Your file never leaves your device
- No account or email required
- No file size cap
- No watermark stamped on your download
Typical "upload to compress" tools
- Your document sits on their server
- Usually requires an account
- Often capped on the free tier
- Free tier often adds a watermark
Frequently asked questions
How much smaller will my PDF get?
It depends entirely on what's in it. Compression re-encodes photos at a lower resolution and quality — a scanned or photo-heavy PDF can shrink a lot, while a PDF that's mostly text or vector graphics may barely change at all, since there are no large images to shrink. You'll always see the real before/after size before you download, not a guess.
What exactly does compressing change?
Only the photos in the PDF — they're re-encoded at a lower resolution and quality. Your text, signatures, and the original vector content stay exactly as they are either way.
Can I compress a scanned PDF?
Yes — a scanned document (effectively one large photo per page) is the best case for real savings, since that's exactly the kind of content compression targets.
Is my PDF uploaded anywhere to compress it?
No. Everything happens in your browser using JavaScript. The file never leaves your device.