In short: Compress PDF reduces the file size of a PDF so it is easier to email, upload or share, showing exactly how much space you save.
Processed locally in your browser
Your files and text are handled entirely on your device using your browser. They are never uploaded to our servers.
Compression runs entirely in your browser. Your PDF is never uploaded.
How to use Compress PDF
3 quick steps. Most people are done in under a minute.
- 1
Upload a PDF file.
- 2
Choose a compression level (best quality, balanced or smallest).
- 3
Compare the before/after size, then download the compressed file.
Compress PDF features
- Multiple compression levels to balance size and quality
- See the exact before and after file size
- Most effective on scanned and image-heavy PDFs
- No upload — compression runs in your browser
When to use Compress PDF
- Get a PDF under an email attachment limit
- Meet upload size limits on job, visa or government portals
- Save storage space on scanned archives
About this tool
Shrink the size of a PDF so it’s easier to share or email. Pick a compression level and see the exact file size saved before you download. Best results on scanned or image-heavy documents.
Compress PDF FAQ
How can I reduce the size of a PDF?
Upload your PDF, pick a compression level and download the smaller file. Image-heavy and scanned PDFs usually shrink the most because their images are re-encoded at a lower size.
Why didn’t my PDF get much smaller?
PDFs that are mostly text are already compact, so there is little to remove. The biggest savings come from documents containing large photos or scans.
Does compressing a PDF reduce quality?
Stronger compression lowers image quality slightly to save space. Text is not affected. Choose a lighter level if you need sharper images.
Is it safe to use this tool with private PDF files?
Yes. Your PDF files are processed entirely in your web browser using JavaScript on your own device. Nothing is uploaded to FaaTools servers, so we never see, store or share your data — you can even disconnect from the internet after the page loads and the tool keeps working.