Click or drag your PDF into the upload area. Files up to 100 MB are supported.
Choose: Low (best quality, less reduction), Medium (balanced), or High (maximum compression, reduced quality). Most users choose Medium.
The tool analyzes and compresses your PDF — removing redundant data, compressing embedded images, and stripping metadata.
See the before/after file size (e.g. '8.4 MB → 1.2 MB, 86% smaller'). Download the compressed file.
The tool uses several optimization techniques: Image recompression — embedded photos are re-encoded at lower quality. Font subsetting — only the characters used in the document are kept, not the full font. Metadata removal — hidden document properties, author info, and revision history are stripped. Redundant object cleanup — unused or duplicate PDF objects are removed. Stream compression — internal PDF data streams are re-compressed using efficient algorithms like Flate/Deflate.
Compress large PDF reports to stay under the 10–25 MB email attachment limit.
Save cloud storage space by compressing large PDF libraries.
Reduce PDF brochure or whitepaper size for faster website download speed.
Smaller PDFs load faster and use less mobile data when sharing via messaging apps.
Many online portals have upload size limits — compress before submitting.
Scanned PDF files are often huge. Compression can reduce them by 80–90%.
Medium compression typically achieves 60–80% file size reduction with barely noticeable quality loss — the sweet spot for most use cases.
PDFs with lots of photos compress dramatically. Text-only PDFs have less room for compression since text takes very little space.
Scanned documents benefit most from compression. Use 'High' compression on scanned PDFs — the visual quality difference is minimal at print-typical resolutions.
If you just merged several PDFs, always compress the result — merged files often have duplicated fonts and resources that compress very efficiently.