Documents
Free PDF Compressor
Shrink a PDF in your browser by re-rendering pages as compressed images at a chosen quality and resolution. Best for scans/image-heavy PDFs. Nothing is uploaded.
Tool
How it’s calculated
- Renders each page with pdf.js, re-encodes it as a JPEG at your chosen quality and resolution, then rebuilds the PDF with pdf-lib — all in your browser (pinned CDN libraries).
- Because pages become images, selectable text and bookmarks are lost. This works best for scanned or image-heavy PDFs; text-only PDFs may not shrink (or could grow).
This tool gives an estimate for planning. Check the result against your own records before acting on it.
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