Compress PDF file size
Shrink a PDF by re-optimizing its internal structure and images.
Drag & drop a file here, or click to browse
Accepts .pdf · processed on your device
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This tool runs fully in your browser. Your file is never uploaded to a server.
How it works
1
Upload your PDF.
2
We rebuild the file, dropping unused data and re-encoding images.
3
Download the smaller file.
Frequently asked questions
It depends on the source — PDFs full of scanned images shrink the most; text-heavy PDFs are already efficient and shrink less.
Structural compression is lossless. Image re-encoding uses a moderate quality setting to balance size and clarity.
Real, aggressive PDF compression normally relies on server-side tools like Ghostscript. Our browser-based version is a solid best-effort — for the most demanding cases a connected server engine can do more.