Guides
How to compress a PDF before email or upload
Reduce PDF size in the browser before sending by email or uploading to a portal. Best for oversized scans, reports, and image-heavy PDFs.
Compress PDF when the file is too large for email, web forms, or internal systems. It is especially useful for scans and image-heavy exports.
Best for
- Email attachments that exceed mailbox size limits
- Portal uploads with strict PDF size caps
- Reducing storage for archived scans and reports
How to do it
- Open Compress PDF and select the file you want to reduce.
- Choose the compression level that matches your quality target.
- Run compression and compare the output size with the original.
- If the result is still large, remove unnecessary pages or convert large images before sending.
Common questions
Will compression reduce quality?
It can. Higher compression usually reduces image quality more than light compression, so check the output before sending.
Should I compress before or after merging?
Usually after merging. That lets you optimize the final file only once.