Compress PDF
Compress PDFs to an exact target size or strength. Free, private, and runs in your browser.
1 Select or drop your file to start Compress PDF. Everything runs directly in your browser.2 Choose your target size or options. Compress PDF processes the file instantly on your device.3 Download your finished file. Nothing is ever uploaded to a server.
About this tool
Compress PDF when photos or scans inside the file are larger than needed for form uploads. Choose an exact KB target or reduction preset. Text remains crisp and selectable. All compression runs in memory on your device without uploading files to any server.
Compress PDF is processed entirely on your device. Your original file remains untouched, and nothing is ever uploaded to a server or saved in the cloud.
- No upload: the PDF is processed entirely on your device with zero cloud upload.
- Speed: processing happens instantly on your device with no upload or download delays.
- Quality: you can check your file before saving, and the original remains unchanged.
FAQ
Does “Compress PDF” upload my file?
Compress PDF processes your file locally in this browser tab. There is no upload step and no account required.
What will “Compress PDF” actually change?
Images are optimized and downscaled as needed to hit the exact target size. Text remains crisp and searchable.
When is “Compress PDF” the wrong job?
If the PDF is already well-compressed, the tool informs you honestly instead of degrading quality.
How do I check the result of “Compress PDF”?
Check the downloaded file to ensure it meets your form upload limit.
Can I run “Compress PDF” with Wi-Fi off?
You can turn off Wi-Fi after loading this page and Compress PDF still works completely offline.
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Compress PDF to 20 KBCompress PDF to 50 KBCompress PDF to 100 KBCompress PDF to 150 KBCompress PDF to 200 KBCompress PDF to 300 KBCompress PDF to 500 KBCompress PDF to 1 MBCompress PDF to 2 MBCompress PDF to 5 MBCompress PDF to 10 MB
Why is my PDF so large?Reduce PDF size without losing qualityIs it safe to upload PDFs to online tools?
Last updated 2026-09-27.