Go to File > PDF Optimizer > Reduce File Size . This uses default settings to quickly shrink the current file or multiple files in batch mode.
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This is the best method for reducing a folder of 100+ PDFs. Go to File > PDF Optimizer > Reduce File Size
Allows you to "audit space usage" to see exactly what is making the file large (e.g., images or fonts) and manually adjust image pixels or un-embed unnecessary data. compress pdf file size foxit free best