Compress

Recompress, downsample and optionally grayscale images.

Loading tool…

Drag PDFs here, or click to choose

Compression preset Image quality (70) Target DPI / max image size

Convert images to grayscale

How to compress a PDF

Drop a PDF file into the dropzone.
Choose a compression preset, or adjust quality, target image size and grayscale manually.
Click "Compress" to download the smaller PDF.

FAQ

Is my file uploaded to a server?

No — everything runs locally in your browser; your file never leaves your device.

How much smaller will my file get?

It depends on the file — quality and target image size affect image-heavy PDFs most. Grayscale can shrink color scans, while text-only PDFs barely change.