Compress PDF
Reduce file size while keeping quality. Your files never leave your device.
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Frequently Asked Questions
- How much can PDF compression reduce file size?
- Typically 20–90% depending on PDF content. Image-heavy PDFs compress the most. Text-only PDFs compress less.
- Will compression reduce PDF quality?
- The default setting balances size and quality. You can adjust the quality slider — lower quality = smaller file. Text and vector graphics are never degraded.
- Is this tool free to use?
- Yes, completely free. No account, no subscription, no hidden limits.
- Are my files safe? Do you upload them?
- Your files never leave your device. All processing runs locally in your browser using JavaScript — nothing is sent to any server.
- Does it work on mobile?
- Yes, it works on all modern browsers including mobile Safari and Chrome on iOS and Android.