PDF Compressor rebuilds your PDF from compressed page images using pdf.js and jsPDF.
Compress PDF
Compress PDF Free
Reduce PDF size by re-encoding pages as JPEG at a chosen quality and DPI - compare before and after locally.
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What is this?
How it works
1. Upload a PDF.
2. Set quality and DPI.
3. Compress and download.
4. See savings percentage.
Features
- Quality slider
- DPI presets
- Size estimate
- Before/after comparison
- Metadata strip on rebuild
Benefits
Shrink large scan PDFs for email and uploads.
Trust & privacy
Compression runs entirely in the browser.
Frequently asked questions
Pages are rasterized, so very small text may soften at low quality.
Rebuilding from canvases drops original metadata.