Compress PDF for Gmail (25 MB), Outlook (20 MB), Yahoo Mail, iCloud, ProtonMail and corporate inboxes free online. Reduce PDF size for email attachments without losing quality. The fastest free PDF compressor for mail — no watermark, no signup.
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Free PDF compress for email — files up to 100MB
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If your PDF keeps bouncing, here's the cap and the matching preset on FreePDFCompress.
Gmail bounces attachments over 25 MB. Use the 25 MB preset to compress PDF for Gmail and send big resumes, scans and contracts without bouncing.
Outlook.com and Microsoft 365 cap attachments at 20 MB. Compress PDF for Outlook with the 20 MB preset (default).
Same 25 MB ceiling as Gmail. Use the 25 MB preset to compress PDF for Yahoo Mail.
Standard SMTP limit is 20 MB unless Mail Drop is on. The 20 MB preset compresses PDF for iCloud Mail in seconds.
Privacy-focused inboxes typically cap at 15 MB. The 15 MB preset compresses PDF for ProtonMail and Zoho Mail.
Most corporate filters strip anything over 10 MB. Use the 10 MB preset for Office 365 and Exchange inboxes.
Drag & drop or pick a file — up to 100 MB.
Gmail, Outlook, Yahoo, iCloud, Proton or corporate. The free PDF compressor adapts quality.
Download the compressed PDF and attach. No watermark, no extra page.
Fresh tutorials, attachment-limit guides and provider walkthroughs from the FreePDFCompress blog — Gmail, Outlook, Yahoo, WhatsApp and more.
Free online PDF compressor pre-tuned for Gmail, Outlook, Yahoo Mail, iCloud, ProtonMail and corporate inboxes. Reduce PDF file size for email attachments in seconds.
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