Compress PDF for Outlook
Shrink PDF file size for Outlook attachments. Send large files easily.
How it works (3 quick steps)
- 1
Upload PDF
Select your PDF file - works with government forms, IDs, and any document.
- 2
Choose Compression
Select 'High' for 100KB or 'Extreme' for maximum compression.
- 3
Download Free
Get your compressed PDF instantly - no watermarks, no sign-up.
Why pick Convertify for this?
Files stay on device
Convertify processes everything in your browser using JavaScript. Your file is never uploaded — confirm with DevTools → Network. That makes this safe for sensitive material like contracts, IDs, and financial documents.
No upload wait
Because nothing uploads, processing starts the instant you click. For typical files (under 50 MB) the whole job finishes in seconds — no progress bar, no queueing behind other users.
No daily quota
Free without limits, including no "3 conversions per day" cap that competing services impose. Run as many compress pdf jobs as you need.
No watermark
Your output is clean — no Convertify branding, no metadata stamp. Same as if you'd run a paid desktop app.
Other ways people use Compress PDF
- •Compressing PDFs to 100KB for government form uploads
- •Reducing passport scans to 200KB for visa portals
- •Shrinking PDFs for email attachment limits
- •Making official documents smaller without quality loss
- •Optimizing scanned IDs for online applications
Related Compress PDF guides
Frequently asked questions
What is Outlook's attachment limit?⌄
Outlook.com caps attachments at 20MB, while many corporate Exchange/Outlook servers limit to 10MB. Compress below your specific limit to avoid bounce-backs.
Why does Outlook block my large attachment?⌄
When a file exceeds the server limit, Outlook either refuses to send or converts it to a OneDrive link. Compressing keeps it as a true attachment.
How much can I shrink my PDF?⌄
Scanned PDFs often shrink by 70-90%. Text-based PDFs compress less but still drop enough to fit strict 10MB corporate limits.
Will the recipient notice a quality drop?⌄
With "Balanced" compression, text stays sharp and images remain clear, so most recipients won't notice any difference.
Is compressing business documents private?⌄
Yes. Everything is processed locally in your browser, so confidential work files are never uploaded.