Free tool
Compress PDF
Reduce the file size of scans and image-heavy drawing sets. Choose how hard to compress, and we'll rebuild a lighter PDF — right in your browser, with nothing uploaded.
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- 100% private — processed in your browser
- Free forever
- No sign-up required
How it works
1
Upload your PDF
Drop in the PDF you want to shrink, or click to browse.
2
Choose a compression level
Pick High quality, Balanced, or Smallest file depending on how much size you want to save.
3
Download the smaller PDF
Enter your email and download — we show you exactly how much smaller it got.
Frequently asked questions
- Is this PDF compressor free?
- Yes, it's completely free with no account, sign-up, or watermark. Enter an email when you download and the file is yours.
- Are my files uploaded anywhere?
- No. All processing happens locally in your browser — your PDF is never uploaded to a server, so it stays completely private.
- How much smaller will my PDF get?
- It depends on the file. Scans and image-heavy drawing sets often shrink dramatically; PDFs that are already optimized may not shrink — in that case we keep your original instead of returning a larger file.
- Will compression affect quality?
- Compression rebuilds pages as images, so selectable text becomes part of the page and very fine detail softens at higher levels. Choose High quality to keep pages crisp, or Smallest file for maximum savings.
Other free tools
Leave the desktop behind. Keep the capability.
Free on up to 3 drawings · No credit card required