Compress PDF Online
Compress PDF online for free and make oversized documents small enough to email, upload or store. Pick the compression level that matches your goal — strong shrink for sharing, balanced for everyday use — and watch the tool report exactly how much space you saved. All compression happens locally on your device.
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How to compress pdf online for free
- 1
Select or drop the PDF you want to compress.
- 2
Choose a compression level: strong reduction, balanced or light.
- 3
Click “Compress PDF” and track the progress bar.
- 4
Compare the before/after sizes and download your smaller PDF.
Why use this compress pdf tool?
Three quality levels
Go strong for minimum size, balanced for great everyday quality, or light when you want to keep as much detail as possible.
See the savings instantly
The tool shows original and compressed sizes with the percentage saved, so you know it worked.
Beat email limits
Get files under the 10–25 MB attachment limits of Gmail, Outlook and web forms in a couple of clicks.
Private compression
Your PDF is rebuilt entirely on your device — nothing is uploaded to any compression server.