Compress PDF
Shrink a PDF so it fits an email attachment limit or an upload form. Balanced mode losslessly optimizes the file structure and Small mode also strips metadata, while Maximum re-compresses every page as an image for the biggest savings.
How to use Compress PDF
- Add your PDF. Click the upload area or drag and drop your file (PDF). Nothing is uploaded; it stays on your device.
- Choose your options. Adjust the settings for Compress PDF if they are shown, or keep the defaults for a quick result.
- Run Compress PDF. Press the "Compress PDF" button and wait a moment while your PDF is processed.
- Download the result. Your PDF result downloads straight away. Process another file whenever you like, with no limits or sign-up.
Why use Compress PDF?
- Private by design: runs in your browser, nothing is uploaded
- Free with no sign-up and no watermark
- Fast, with no upload or download wait
- Works on phone, tablet and desktop
Common uses for Compress PDF
- Get a scanned contract under a 5 MB or 10 MB upload limit.
- Make a report easy to send on WhatsApp or email.
- Archive large batches of PDFs using less storage.
Private by design
Compress PDF runs entirely in your browser. Your PDF is read and processed on your own device and is never uploaded to our servers. Read our Privacy Policy for details.
Frequently asked questions
Will compressing reduce quality?
I Hate Image and PDF balances file size and visual quality; you can choose a preset that favors quality or file size.
Is there a file size limit?
Free compression currently supports files up to 50MB.
Which compression mode should I pick?
Start with Balanced, which keeps text selectable and never changes how pages look. If the file is still too large, use Maximum: it re-renders pages as compressed images, so size drops sharply but text can no longer be selected.
Is Compress PDF free to use?
Yes. Compress PDF is free, needs no account and never adds a watermark to your result.
Is my PDF uploaded when I use Compress PDF?
No. Compress PDF works inside your browser, so your PDF stays on your device from start to finish.
What file types does Compress PDF accept?
Compress PDF accepts PDF and produces PDF.
Is there a file size limit for Compress PDF?
You can process files up to 50 MB each.