Compress PDF under 5MB
Get any PDF under 5MB for standard email attachment limits. Recommended preset preserves visual quality. No watermarks, no signup.
5MB is the de facto standard for email attachments — Gmail, Outlook, Yahoo Mail, and most corporate mail servers all happily accept files up to this size. Going under 5MB means your message arrives without bouncing and your recipient doesn't have to deal with a download link to an external file-sharing service.
For documents up to 100 pages with normal image content, the Recommended preset reliably produces under-5MB output. For longer PDFs or image-heavy ones, the High preset gets you there with slight image softening. PDFOnly uses content-aware compression — text stays at full resolution while images are downsampled, so your output reads as well as the original even at aggressive size targets.
Frequently asked questions
Why can't I send PDFs larger than 5MB by email?
Most email servers cap attachments around 25MB end-to-end, but the practical limit is much lower because each hop in the email path may shrink it (some corporate filters cap at 5MB). Sending under 5MB ensures your message reaches every recipient without bouncing.
Will the recipient be able to view the compressed PDF?
Yes — the output is a standard PDF that opens in any reader: Adobe, Preview, Chrome, mobile readers, everything. We don't use proprietary formats or compression schemes.
Is this the same as Gmail's 'Send via Drive' link option?
No — that uploads to Google Drive and emails a download link, which works but bypasses your privacy preferences and adds a click for the recipient. Compressing under 5MB sends the file directly as an attachment, which most recipients prefer.