PDF Compressor Online — Reduce Size Without Uploading
An online PDF compressor that avoids server upload is possible because pdf-lib — a JavaScript PDF library — runs inside modern browsers. This compressor processes your PDF in-browser, strips unnecessary metadata, and delivers the reduced file as a direct download.
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PDF compression uses pdf-lib in your browser — your document is never uploaded to any server.
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Compress PDF →
Free · No upload · No account required
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Frequently Asked Questions
- How much can I expect my PDF to shrink?
- Results depend on the PDF structure. PDFs containing redundant metadata or large uncompressed streams will reduce more than already-optimized PDFs.