PDF · Free browser tool

Compress PDF

Reduce file size, keep quality.

Runs on your deviceNo account needed

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Create a smaller image-based PDF from a scanned or image-heavy document. Pages are rendered as images and rebuilt into a new PDF, so inspect the tradeoffs before using it.

How to use Compress PDF

Open a PDF

Choose a PDF you have permission to process.

Choose quality

Select the rendering and image-quality settings shown in the tool.

Inspect the result

Download a copy, compare its size, and check text readability and every page.

What to check

This method rasterizes pages. Selectable text, hyperlinks, forms, vector graphics, and accessibility tags may be lost. The output can be larger than the original. Keep the original, especially for searchable or signed documents.

Common questions

Is Compress PDF free?

Yes. There is no account requirement or payment step to use this tool.

Where is my input processed?

Inside your browser. This tool does not submit your input to a processing server. The hosting service still receives normal requests to load the website and its assets.

Will this work on my phone?

It is designed for current browsers on phones and computers. Available memory, file size, browser format support, and the tool’s controls determine what your device can process.