PDF Compressor

Shrink a PDF's file size by recompressing its pages. Results vary by file.

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Works by rendering each page as an image and recompressing it — this shrinks image-heavy and scanned PDFs well, but text is no longer selectable in the output. For text-heavy PDFs that are already small, compression may not help much.

How to use PDF Compressor

Upload your PDF.
Pick a compression level — Low (best quality), Medium (balanced) or High (smallest file).
Compress and download the smaller file, and compare the new size to the original.

→ compress the images inside your PDF separately

Frequently asked questions

How does this actually reduce file size?

Each page is rendered as an image and re-saved at a lower resolution and JPEG quality, which works well for scanned documents or image-heavy PDFs — but it means text is no longer selectable or searchable in the output, since the whole page becomes a picture.

Why didn't compression help much on my PDF?

If the PDF was already mostly text with few or no images, there wasn't much to compress in the first place — rasterizing text-heavy pages can even make them larger. This tool is best suited to scanned or image-heavy PDFs.

Is my file uploaded anywhere?

No — every page is rendered and recompressed entirely in your browser.

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