Compress PDF

Reduce supported image data and rewrite PDF structure safely. If the result is not smaller, you get the original file.

All processing happens in your browser. Nothing is uploaded.

Drop PDF files here or click to browse

Compression goal

Images changed
Images downsampled
Images skipped
Lossless streams changed
Smaller structural rewrite used
Size options tested
Selected image setting

About this tool

Reduce supported image data and rewrite PDF structure safely. If the result is not smaller, you get the original file.

Prioritizes the smallest file for screen sharing. Noticeable image softness and JPEG artifacts are possible.
Balances file size and ordinary reading quality.
Keeps higher JPEG quality for printing. It is still a lossy setting.
Finds the clearest measured result at or below your target. If the limit cannot be reached safely, you receive the smallest tested result with a clear warning.

Compression result