Free PDF Compressor
Compress PDF files online for free. Reduce PDF size without losing quality — optimize for email, web, and storage in your browser.
Drop a PDF here to compress — nothing leaves your browser.
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PDF Compressor
Compress PDF files your way — pick a level and shrink for email, web, or storage. The compress runs entirely in your browser, so your document never leaves your device.
Why it matters: Because nothing is uploaded, your files stay private and there is no wait for server processing.
How to PDF Compressor
- Open the PDF Compressor tool and add your PDF (drag-and-drop or browse — it never leaves your device).
- Pick a level: Best quality (sharpest), Balanced (default), Smaller file, or Tiny (aggressive re-encode).
- Click Compress PDF. Pages are re-rendered as optimized images, so the lighter file downloads instantly.
- Download the result — everything runs in your browser, nothing is stored or sent.
Frequently Asked Questions
Open your PDF in the tool, choose a compression level, then click Compress and download. Compression runs entirely in your browser with pdf-lib — nothing is uploaded.
Text and vector PDFs are compressed losslessly — words stay sharp and searchable, and the file only gets smaller. Scanned/image PDFs are re-encoded at the level you pick, so lighter levels shrink harder. The tool never makes a file bigger.
No. All compression happens in your browser. Your file never leaves your device.
Yes. Pick a lighter level to shrink reports, scans, and books under typical attachment caps before you send them.
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