A PDF full of scanned pages or high resolution images can balloon past email and upload limits. Compression brings it back to a sensible size while keeping it readable.
Why PDFs get so big
The usual culprit is images. A document that is mostly text stays small, but add a few full-page scans or photos and the size jumps. Compression mainly works by reducing the weight of those images.
How to compress a PDF
- Open the Compress PDF tool.
- Add your PDF.
- Pick a compression level that balances size against quality.
- Download the smaller file.
It runs in your browser, so confidential documents are never uploaded.
Tips to get under a limit
- For scanned documents, a medium setting usually keeps text crisp while cutting size a lot.
- If the PDF has pages you do not need, remove them first with Split PDF. Fewer pages means a smaller file.
- Building a PDF from photos? Compress the images first with the Image Compressor, then convert.
Common size targets
Most email services allow around 20 to 25 MB per message, but many portals cap uploads at 2 MB or 5 MB. Aim below the limit with a little margin so the upload does not get rejected.
Frequently asked questions
How do I make a PDF smaller to email it?
Open the Compress PDF tool, choose a compression level, and download. For very large files, also remove pages you do not need before compressing.
Will compressing a PDF make the text blurry?
Text usually stays sharp because compression mainly targets images. A medium setting keeps scanned pages readable.
Is my PDF uploaded to compress it?
No. Compression runs in your browser, so the document stays private.