Tool
PDF Compressor
Reduce PDF file size by up to 80%. Three quality levels — pick the right trade-off for your use case.
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About this PDF compressor
This tool reduces PDF file size by re-rendering each page at a lower resolution and re-encoding the content as a compressed JPEG. It works on any PDF — scanned documents, reports, presentations, forms — and runs entirely in your browser. Your file never leaves your device.
Maximum compression targets the smallest possible file. It's good for archiving or sharing over slow connections where exact print quality isn't needed. Balanced is the right choice for most situations — significantly smaller, still readable everywhere. High Quality preserves near-original clarity while still trimming file size, ideal for PDFs that will be printed or presented.
If your PDF is already small (under 200 KB) or primarily contains vector graphics with minimal images, compression savings will be modest. The biggest gains come from PDFs that contain photos, screenshots, or scanned pages.
All processing uses PDF.js for rendering and pdf-lib for output. Nothing is uploaded. Nothing is stored.
More PDF tools: Merge PDF · Split PDF · Remove PDF Pages · PDF to JPG · Word to PDF