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Compress PDF Files
Reduce PDF file size by downsampling images - no quality loss on text.
How it works
- 1Upload a PDFDrop or select a PDF file. The tool shows the original file size.
- 2CompressThe tool strips metadata, rebuilds internal streams, and applies object stream compression.
- 3DownloadDownload the compressed PDF. Text is preserved perfectly - compression targets metadata and internal structure.
Frequently asked questions
How much size reduction can I expect?
Text-heavy PDFs typically see 5-15% reduction from metadata removal and stream recompression. PDFs with embedded fonts or duplicate objects can see larger savings. Image-heavy PDFs need image-specific compression (not available in this tool).
Does compression affect quality?
No. Text remains selectable, images stay at their original resolution, and the PDF renders identically. The compression is lossless - it restructures internal data without discarding content.
Why is my compressed file the same size?
Some PDFs are already well-compressed internally. If the PDF was created by a modern tool, the internal streams may already be optimized. The main savings come from metadata removal and object stream consolidation.