Compress PDF
Reduce PDF file size by compressing page content — free, private, 100% in your browser.
PDF files often contain high-resolution images, embedded fonts, and metadata that inflate the file size far beyond what is necessary. This compressor reduces PDF file sizes while maintaining readable quality — essential for email attachments, upload limits, and faster document sharing. All processing stays in your browser.
Drop a PDF file here or click to upload
Max recommended: 50 MB (processed locally)
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Original
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Compressed
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Reduction
How to Compress a PDF
- Upload a PDF — drag & drop or click to select.
- Adjust quality — lower quality means smaller file. 60% is a good default.
- Click Compress — processing happens entirely in your browser.
- Download — get the compressed PDF instantly.
Frequently Asked Questions
How much smaller will my PDF be? ▼
Depends on the content. Image-heavy PDFs can shrink 50-80%. Text-only PDFs may see smaller reductions.
Are my files uploaded to a server? ▼
No. Everything runs locally in your browser using pdf.js and pdf-lib. Your files never leave your device.
Will compression affect text quality? ▼
This compressor re-renders pages as images, so text becomes rasterized. For documents that need selectable text, use higher quality settings.
📖 Further reading: Best Free PDF Tools Compared