Guide · Intent
How to compress a PDF for Gmail’s 25 MB limit
Gmail will not attach more than 25 MB. After Base64, a 24 MB PDF often fails anyway. ChargeBite shrinks the file with Ghostscript quality presets, returns it, and deletes the upload — no account, no document library.
Updated 2026-09-08
Why “25 MB” is not 25 MB
Gmail encodes attachments. A 22 MB file can cross the wire limit. Outlook.com and Yahoo are in the same 20–25 MB band. If a portal or hiring site also caps uploads, the same compressed PDF usually works there too.
Step-by-step
- Open Compress PDF.
- Upload the file Gmail bounced.
- Try ebook first. If it is still huge, use screen.
- Check the result size. Aim under 20 MB, attach, send. Temporary files are already gone.
When compression is not enough
A 200-page color scan may stay large. Split out the pages you actually need with Split PDFor Organize PDF, then compress again.
FAQ
What is Gmail’s attachment limit?
Gmail’s send cap is 25 MB per message. Base64 encoding adds about a third, so a 20–22 MB PDF is a safer target than 25 MB exactly. Files over the cap become a Google Drive link instead of a real attachment.
Which Compress PDF preset should I use for email?
Start with ebook. Use screen if the PDF is still too large (photo-heavy scans). Use printer only when the recipient must print at high quality.
Do you keep the PDF after compressing?
No. The file is uploaded over HTTPS, compressed, returned, and deleted.