PDF Tool
PDF Compress
Reduce PDF file size by stripping metadata, compressing streams, and removing unused objects — entirely in your browser.
🔒 100% in-browser · Your PDF never leaves your device
ℹ️ What this tool compresses
✓ Document metadata (Author, Title, Producer…)
✓ Unused/orphaned PDF objects
✓ Object streams (packed + deflate compressed)
✓ Page-level hidden metadata (High mode)
✓ Thumbnail images embedded in pages (High mode)
✗ Embedded images — needs server-side tools
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How to use the PDF Compressor
Drop or select your PDF, choose a compression level, and click Compress & Download PDF. The download starts automatically. No server, no upload — everything runs in your browser using pdf-lib.
Compression levels explained
- LowResaves the PDF using object streams and deflate compression. Fastest, smallest change.
- MediumCopies all pages into a fresh document, removing orphaned resources and all document metadata. Best all-round choice.
- HighDeep rebuild — additionally strips page-level metadata, thumbnail images, and transition effects for maximum reduction.