Compress PDF Documents In-Browser

Reduce PDF file sizes safely without server uploads. Downsample embedded images, remove redundant metadata, and optimize document objects with live before/after size analysis.

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Drop your PDF files here, or browse

Supports single or batch multi-file compression • 100% Private in your browser

.PDF • Batch ZIP • Smart Resizing

⚙️ Compression Settings 1 file

Choose your compression level or fine-tune image quality and resolution downsampling.

Low (High Quality) ~20–40%

Light image compression with high DPI. Ideal for documents intended for printing.

Quality: 85% • Scale: 90%

Medium (Balanced) ⭐ ~40–65%

Optimal balance of sharpness and size reduction. Best for email attachments and web sharing.

Quality: 65% • Scale: 75%

High (Max Reduction) ~65–85%

Aggressive downsampling for heavy scans to fit strict upload size thresholds.

Quality: 45% • Scale: 60%

Ready to compress 0 MB

💡 How In-Browser PDF Compression Works

1. Image Downsampling

Embedded photos, graphics, and high-DPI scans are re-rendered and compressed as optimized JPEGs, achieving major size reduction.

2. Object & Metadata Stripping

Unused object streams, redundant font subsets, and tracking metadata (author, creation tool) are pruned safely.

3. Pure Text Documents

PDFs containing only vector text and no bitmap images are already compact, so reductions will naturally be lower.