🗜️ Compress PDF

Reduce PDF file size by re-rendering pages as compressed images. Adjustable quality for the perfect balance between size and clarity.

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Drop a PDF file here or click to browse

How PDF Compression Works

This tool uses two compression strategies and picks the smallest result:

Lossless re-save — Strips unused objects and metadata, keeping text selectable. Works best for text-heavy PDFs.
Image-based compression — Renders each page as a JPEG at your chosen DPI and quality. Works best for scanned documents and image-heavy PDFs.

Quality Guidelines

80-95% — Minimal quality loss. Best for documents with fine text or detailed graphics
60-80% — Good balance. Suitable for most documents, reports, and presentations
30-60% — Aggressive compression. Good for scanned documents and image-heavy files

Tips for Best Results

PDFs with embedded high-resolution images see the most size reduction
Text-only PDFs may not compress much (they're already small)
Use 150 DPI for a good balance between quality and file size
Use 72 DPI for maximum compression when screen viewing is the only use case

Limitations

If image-based compression is used, the output will not have selectable text. The tool shows which method was used after compression.
Text-heavy PDFs that are already well-optimized may show little or no size reduction — this is expected.
All processing happens in your browser — very large PDFs (50+ pages) may take longer depending on your device.