Compress PDF to 20 MB
Shrink any PDF to 20 MB (Outlook attachment limit) without uploading it. Everything happens in your browser.
Compress PDF
Reduce file size while keeping quality. Choose your compression level.
Drag & drop PDF files here, or click to browse
Detailed Guide
Learn step-by-step how to use this tool effectively.
Use the High level for PDFs that need to fit close to 20 MB.
When you need 20 MB
Email attachments
Get under common email size caps and avoid bounce-backs.
Web form uploads
Pass strict government, school, and job portal upload limits.
Cloud storage savings
Save storage and bandwidth on Drive, Dropbox, and OneDrive.
Frequently asked questions
Can I always reach 20 MB?
It depends on the original file. Image-heavy PDFs compress more aggressively than text-only PDFs. If the result is still too large, try splitting the PDF first.
Are my files uploaded?
No. Compression runs entirely in your browser using WebAssembly. Your PDF never leaves your device.
Is there a file count limit?
No. You can compress as many PDFs as you like, one after another, completely free.