Reduce PDF file size without losing quality. No sign-up. No watermarks. Processed entirely in your browser.
Upload your PDF to compress
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🔒 Files are processed locally in your browser. Nothing is uploaded.
The Compress PDF tool reduces your PDF file size by stripping out hidden redundant data, embedded metadata, and duplicate content structures — without re-encoding or degrading the visual quality of your text and images. The result is a smaller file that looks identical to the original.
Everything runs in your browser. Your file is never uploaded to any external server and nothing is stored after your session ends.
Results depend on what's inside your PDF. Scanned documents and image-heavy PDFs typically shrink by 40–70%. Text-only PDFs like contracts or forms usually reduce by 5–20%. If your PDF is still large after compression, it likely contains very high-resolution images — try re-exporting the original at a lower DPI (150 DPI is fine for screen viewing).
This tool removes hidden redundant data without touching visible content. Text and image quality stays the same. Only aggressive compression settings would visibly reduce image resolution — this tool does not use those.
Yes. This tool processes your file locally in your browser. Your PDF is never uploaded to any server and is not stored or shared.
If your PDF contains very high-resolution images, lossless compression has limited room to work. Try re-scanning at 150 DPI or re-exporting the source file at lower image quality.
No — unlock it first using the Unlock PDF tool, then compress.