Compress PDF
Upload a PDF, then press Compress to rebuild it smaller.
Waiting for a PDF file.
Private by design: compression runs entirely in your browser, so your PDF never leaves your device.
Reduce PDF file size for free, right in your browser. Upload a PDF, compress it with one click, then download the smaller file. Your document never leaves your device.
Upload a PDF, then press Compress to rebuild it smaller.
Waiting for a PDF file.
This tool rebuilds your PDF with a modern object-stream structure and drops leftover metadata and unused objects that bloat files edited many times. Image-heavy PDFs shrink the most when the source contains uncompressed or duplicated resources.
Everything happens locally in your browser, so even confidential documents are safe to compress here. Nothing is uploaded to any server.
Some PDFs are already optimized, for example files exported with aggressive settings or made mostly of vector text. In that case the savings may be small, often under 5 percent, which is normal and means the file was already lean.
For the biggest savings, compress images before adding them to the PDF, or print the document to PDF again with lower image quality in your PDF software.