Free PDF Compressor — Reduce PDF Size, No Upload
PDF compression is useful for email attachments and storage. Free online compressors typically upload your PDF to a server and may limit free use to a few operations per day. This compressor processes PDFs locally using pdf-lib, so there is no upload and no usage restriction.
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PDF compression runs in your browser — your document is never uploaded.
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Compress PDF →
Free · No upload · No account required
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Frequently Asked Questions
- How much will my PDF shrink?
- Compression results vary. PDFs with uncompressed metadata and large internal structures may reduce significantly; highly optimized PDFs will see smaller reductions.
- Are there daily limits?
- No. Because processing happens in your browser, there are no server-side usage restrictions.