Is it safe to compress PDFs online?

Yes. LeanPDF compresses your PDF entirely in your browser — your file is never uploaded to a server.

How much can I reduce my PDF file size?

It depends on the content, but PDFs with images can often be reduced by 50% or more.

There is a quality tradeoff. LeanPDF lets you choose a compression level that balances size reduction with acceptable quality.

Combine multiple images into a single PDF

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Add your signature to any PDF document

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Combine multiple PDFs into a single document

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Extract selected pages from a PDF

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Reduce PDF file size by recompressing images

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