Email attachment limits at a glance
Gmail: 25 MB total per message. Outlook.com: 20 MB. Yahoo: 25 MB. Corporate Exchange servers: often 10 MB. Apple iCloud Mail: 20 MB. If your PDF is bigger than your provider allows, the email simply bounces.
Free · 100% browser-based
Compress PDF for Email — Free Online Tool
Hit Gmail's 25 MB or Outlook's 20 MB attachment limit? Compress your PDF down to a sendable size in seconds. Free, browser-based, no upload required.
Private
Your file never leaves your browser.
Instant
Most files process in under a second.
No watermark
Output is byte-for-byte yours.
How we compress for email
We re-encode embedded images at print-acceptable DPI and strip metadata that doesn't affect readability. For most PDFs, that's enough to halve the file size with no visible quality loss. Everything happens locally in your browser — your file is never uploaded to our servers, which means it's safe to use with personal photos, IDs, and confidential documents.
When compression isn't enough
If your PDF is still too large after compression, split it into multiple PDFs and send separately, or upload to a service like Google Drive and share the link instead.
Frequently asked
What's Gmail's PDF size limit?+
25 MB per message including all attachments combined.
Will compression reduce text quality?+
No — only embedded image DPI is reduced. Text stays vector-sharp.
Is my PDF uploaded?+
No. Compression runs entirely in your browser.