Best PDF compressor software for mac for reducing PDF file size?

You can use Preview, a built-in app that comes pre-installed on every Mac. As the best pdf reducing software for mac, it offers a convenient native solution for quickly completing compression tasks without the need for additional downloads. All processing is performed locally on your computer. However, it offers limited compression controls and cannot meet the requirements for high-quality compression.

How to Use Best PDF compression software for Mac

Step 1: Open the target PDF document in Preview.

Step 2: Click File → Export.

Step 3: Check the Encrypt checkbox.

Step 4: Open the Quartz Filters drop-down menu and select Reduce File Size.

Finally, select a save location, then click Save.

Preview offers instant offline PDF compression. It performs exceptionally well for simple plain-text documents. However, its default compression algorithm often significantly reduces image quality. If you need clearer output after compression, we recommend using dedicated software instead.

Pros

• Pre-installed on macOS; works offline, so there’s absolutely no need to worry about confidential files being uploaded to the internet
• Simple workflow with no complex configuration required; in addition to compression, it supports basic PDF editing features
• Fast processing of lightweight documents

Cons

• Limited adjustable compression parameters
• The built-in “Reduce File Size” filter often over-compresses images, resulting in blurry visuals
• No built-in batch compression feature; cannot process multiple PDF files
• Not suitable for PDF files with many images that require clear image quality