PDF Compressor
Reduce PDF file size in your browser by packing objects into compressed streams and stripping unused metadata. Three compression levels, 100% client-side, no uploads.
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What is PDF Compressor?
The PDF Compressor is a free, browser-based tool that reduces the file size of a PDF document. By packing internal objects into compressed object streams and optionally stripping unused metadata, it produces a leaner PDF without installing any software. Everything runs locally in your browser, so your files stay private.
Key Benefits
- Shrink PDF file size for easier email and web sharing
- Three compression levels from light cleanup to aggressive stream packing
- 100% private — files are processed locally and never uploaded
- No sign-up, no watermarks, completely free
- Preserves visual quality — does not re-encode embedded images
Common Use Cases
- •Reducing PDF size to meet email attachment limits
- •Speeding up PDF uploads to web forms and portals
- •Slimming down generated reports before archiving
- •Preparing lightweight PDFs for websites and downloads
- •Cleaning up metadata-heavy PDFs exported by design tools
How to Compress a PDF
- Upload your PDF: Drag and drop your PDF file onto the upload area, or click to browse and select it.
- Choose a compression level: Pick Low, Medium, or High. High packs objects into compressed streams and strips metadata for the smallest output.
- Compress: Click "Compress PDF". The tool processes the file entirely in your browser.
- Download: Review the before/after sizes and percentage saved, then click "Download Compressed PDF" to save the result.
Key Features
- Three compression levels: Low, Medium, and High
- Live before/after size comparison with percentage saved
- High level strips document metadata (title, author, dates) for extra savings
- 100% client-side — your PDF never leaves your browser
- Drag-and-drop upload with instant page detection
- One-click download of the compressed PDF — no server round-trip