How it works
- 1Choose the required file(s).
- 2Set the available options and run the tool.
- 3Download the generated result.
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BROWSER · PDF.js + pdf-lib
Compress PDF
Compress scanned and image-heavy PDFs locally by rebuilding pages with adjustable raster quality.
✓ Best for scanned/image-heavy PDFs✓ Three quality presets✓ Optional grayscale mode
Choose a PDFCompression is performed locally in your browser
Raster compression
This mode rebuilds pages as compressed images. It can greatly reduce scanned/image-heavy PDFs, but selectable text, links and form fields are flattened.
No file selected.
About this tool
Compress scanned and image-heavy PDFs locally by rebuilding pages with adjustable raster quality. Engine: PDF.js + pdf-lib.
Frequently asked questions
Are my files uploaded?
No. Processing is performed locally in your browser.
Do I need to install software?
No. A modern browser is enough.
Will selectable text remain selectable?
No. This browser-only compression mode rasterizes pages, so text, links and form fields are flattened.
Can every PDF become smaller?
No. Already-optimized or text-heavy PDFs may not shrink and can even grow.