PDF Compressor
Reduce PDF file size.
This tool re-saves your PDF with an optimized internal structure (object streams, removal of unused objects). It does not recompress embedded images the way a dedicated desktop tool would, so savings vary depending on the file.
Click or drag a PDF here to upload
Supports single PDF files
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Original Size
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Optimized Size
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Saved
Frequently Asked Questions
How much smaller will my file be?
It depends on the PDF. Files with lots of redundant internal objects or older structures shrink more. PDFs already optimized, or made mostly of large embedded images, may see little change since this tool doesn't recompress images.
Is my PDF uploaded to a server?
No. Optimization happens entirely in your browser using the pdf-lib JavaScript library. Your file never leaves your device.