Will my PDF look blurry?

Recommended compression strikes an optimal balance between sharpness and small size. The Extreme setting is best for heavy scans and documents intended for mobile or email delivery.

Does this always shrink the file?

No. Results depend on the PDF content. If rasterization would increase its size, you receive the original file instead.

Is it private and secure?

100% private. All processing runs locally inside your browser memory. Your documents never touch our servers.

Compress PDF

Reduce file size without losing quality.

Free No Signup 100% Private No Watermark

Tap to select or drop files here

Processed 100% locally in your browser

Up to 75 MB per file and 200 MB per batch

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How to Use Compress PDF in 3 Easy Steps

Fast, local, and completely free with no software installation required.

Select or Drop Your File

Choose or drag-and-drop your file into the secure workspace directly from your device.

Customize Settings & Process

Adjust desired quality, options, or target formatting in real-time with instant browser processing.

Download Your Finished File

Save your optimized, watermark-free result immediately with zero server uploads or tracking.

About Compress PDF

This browser-based tool rasterizes each PDF page at the selected quality. It is intended for scans; text search, links, forms, and vector detail may be lost. If the new file is larger, the original is returned. Supports up to 50 pages and 75 MB.

All file conversions, resizing, and processing take place directly in your browser using modern WebAssembly and HTML5 Canvas technologies. No data is stored, tracked, or sent across external networks.