Compress PDF Online — Reduce File Size for Free
Shrink your PDF files without losing quality. Ideal for email attachments, faster uploads and web optimization. 100% free, no registration.
Choose files
or drag and dropPDF
Your files never leave your device — everything runs locally in your browser.
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How it works
- 1
Select a PDF
Upload the PDF you want to make smaller.
- 2
Choose a level
“Light” optimizes losslessly, “Recommended” and “Strong” shrink images and pages much more.
- 3
Compress
The tool builds several versions and keeps the smallest — never a file larger than the original.
- 4
Compare & download
See the size before and after in MB and download the result.
Typical uses
- Get PDFs under the attachment limit of email providers.
- Upload to application or government portals with size limits.
- Save storage in the cloud and in archives.
Tips
- With “Recommended” and “Strong”, pages become images — text is no longer selectable. Try “Light” first for contracts and forms.
- Photo-heavy PDFs shrink the most; text-only PDFs are often small already.
- Several PDFs? Merge them first, then compress.
Related guides
Lightning Fast
All processing happens instantly in your browser — no server uploads needed.
100% Private
Your files never leave your device. Everything is processed locally.
Free Forever
No sign-up, no watermarks, no file limits. Completely free to use.
98 Languages
Available in 98 languages worldwide.