Compress PDF Online β Reduce File Size in Browser
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Max size: 100.0MB
About PDF Compression
Our tool reduces PDF file sizes by rendering each page as an optimised JPEG image. Processing happens entirely on your device β documents are never uploaded anywhere.
How compression works
- Page rendering via PDF.js at the selected DPI
- JPEG export with adjustable quality level
- Reassembly into a compact PDF with pdf-lib
- Files never leave your browser
PDF compression advantages
Flexible quality levels
Choose between maximum compression and near-lossless output with four presets.
Page-by-page progress
See which page is being processed and the exact completion percentage.
Complete privacy
Documents stay in your browser β ideal for contracts and confidential files.
PDF compression FAQ
Does compression noticeably reduce quality?
It depends on the level. At 'High' quality, text and graphics remain sharp while the file is significantly lighter.
Is the text layer preserved?
No. Pages are rasterised to JPEG images, so text can no longer be selected. Use the 'Maximum' preset if you need to keep quality as close to the original as possible.
What is the maximum file size?
We recommend files up to 100 MB. Larger documents take longer to process.
Where are my documents stored?
Nowhere except your device. All compression runs locally in the browser.