Compress PDF
Reduce the file size of a PDF so it's easy to email and upload. Choose a compression level and download a lighter file — processed entirely in your browser, your PDF is never uploaded.
- Free
- Online
- No limits
- Secure
Compression level
Drop a PDF here or click to browse
Reduces file size by rebuilding each page as an optimized image — processed locally.
Note: compression re-renders each page as an image, so the text is no longer selectable. This gives the biggest size reduction and works best for scanned or image-heavy PDFs.
Your files are processed locally in your browser and never uploaded.
Why use Compress PDF?
Easy to use
Compress PDF was built to be as simple as possible. Add your file, get your result — there's no learning curve.
No installation
It runs right in your web browser. There is nothing to download or install on your device.
100% free
Use Compress PDF as much as you want, completely free — no account and no hidden fees.
Works everywhere
Windows, macOS, Linux, Android or iOS — if you have a browser, it simply works.
Privacy first
We respect your data. Your files are handled with privacy in mind and never kept longer than needed.
Fast & no limits
There are no artificial limits. Process your files quickly, as many times as you need.
Questions and answers
Is Compress PDF free to use?
Yes. Compress PDF is completely free, with no limits and no sign-up required.
Do I need to install any software?
No. Compress PDF works directly in your web browser, on any device.
Are my files safe?
Yes. Your files are processed locally in your browser and are never uploaded to any server.
Which devices and browsers are supported?
Compress PDF works on all modern browsers and operating systems, including Windows, macOS, Linux, Android and iOS.
Is there a limit on how many files I can use?
No. You can use Compress PDF as many times as you like, for free.
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