Compress PDF Reduce file size with local structural optimization and rebuild. Category: Convert Processing: On-device Quota bucket: Heavy Open interactive tool: /tools/compress How to use Compress PDF Choose one PDF and run compression once. Review size delta in the result report. Open output and check chart/text fidelity. If still too large, remove unnecessary pages and recompress. Retain both original and compressed versions until approved. Tips Compression gains vary by source quality and embedded objects. For scanned docs, splitting sections can improve practical sharing size. Validate legibility before client delivery. Privacy: Your files never leave your browser. All processing runs on-device. Full privacy model Frequently asked questions What does Compress PDF change? It rebuilds structure and object streams to reduce file size where possible. Is Compress PDF private by default? Compression is handled locally within the browser process. What does Compress PDF not protect? It does not guarantee a target size or preserve every embedded feature. Limitations Compression may be minimal on already optimized files. It is not a substitute for OCR cleanup on image-heavy scans. Related tools JPG/PNG to PDF Convert image files to one PDF, preserving order and quality. PDF to JPG/PNG Export PDF pages as image files for presentations, docs, and sharing. OCR Text Recognition Extract text from scanned or image-based PDF pages using in-browser Tesseract OCR. Documentation /tools/compress/how-to /tools/compress/privacy /tools/compress/troubleshooting