Compress PDF for email
Most email providers cap attachments at 25 MB (Gmail, Outlook), and many corporate inboxes block anything larger than 10 MB. A scanned report or photo-heavy presentation can blow past that limit on the first try.
No signup · No watermark · Auto-deleted in 60 minutes
Why this works
PDFRun's compressor strips redundant resources, downsamples images intelligently and re-encodes streams — typically reducing files by 50–80% without visible quality loss. The defaults below are tuned specifically for email-safe sizes.
How it works
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1Open the compress toolClick the orange button above to launch the compress tool with email defaults pre-applied.
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2Drop your PDFDrag your file in or click to browse. Files up to 100 MB work on the free tier.
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3Pick your target sizeChoose Gmail-safe (under 25 MB), Outlook-safe (under 20 MB) or Strict (under 10 MB).
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4Download the smaller PDFSave the compressed copy. Your original and the result are auto-deleted within 60 minutes.
Real-world uses
Job seekers
Send portfolios and CVs without "attachment too large" bounces.
Sales teams
Email proposals and decks that land in the inbox, not the cloud-link wasteland.
Accountants
Forward tax packages and audit bundles to clients in one go.
Students
Submit assignments to instructors capped at 10 MB attachments.
Common questions
Will compression ruin scan quality?
No. Default settings preserve readable text and clear images. For archival-grade output, choose the "Lossless" preset.
What's the safest size for any email?
Aim for under 10 MB — that clears virtually every corporate filter and mobile carrier limit.
Can I compress multiple PDFs at once?
Yes — Pro accounts support batch compression, ideal for sending a folder of invoices or contracts.
Does compression remove sensitive metadata?
Standard compression keeps metadata. Use the Redact tool first if you need to strip authors, comments or revision history.