How much smaller will my file get?

It depends heavily on content — PDFs with large embedded images compress the most (often 50–90% smaller), while text-only PDFs are usually already small and won't shrink much further.

Will compression make my text blurry?

No — compression targets embedded images and redundant internal data. Vector text stays sharp at any zoom level regardless of compression setting.

Is this a lossy or lossless compression?

Image compression is lossy (adjustable — higher settings trade more visual fidelity for smaller size); the rest of the PDF's internal structure is compressed losslessly.

PDF Tool

Compress PDF

Strip unnecessary metadata and optimize document structure. Runs entirely in your browser.

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Good to know: this works best on PDFs with many forms, fonts, or embedded objects. If your PDF is large mainly because of high-resolution photos, this tool won't shrink it dramatically — reducing photo quality inside a PDF needs a different technique we haven't built yet.

Drag a PDF here, or click to browse

Single file · Max 100.0 MB

How it works

1
Upload the PDF you want to shrink.
2
Pick a compression level — higher compression means a smaller file but slightly reduced image quality.
3
Click Compress. Processing happens locally in your browser.
4
Download the smaller file and compare the size reduction shown on screen.

Compress PDF — frequently asked questions

How much smaller will my file get?: It depends heavily on content — PDFs with large embedded images compress the most (often 50–90% smaller), while text-only PDFs are usually already small and won't shrink much further.
Will compression make my text blurry?: No — compression targets embedded images and redundant internal data. Vector text stays sharp at any zoom level regardless of compression setting.
Is this a lossy or lossless compression?: Image compression is lossy (adjustable — higher settings trade more visual fidelity for smaller size); the rest of the PDF's internal structure is compressed losslessly.