How to Compress PDF Files for Email Attachments
A step-by-step guide to reducing large PDF file sizes under 25MB without ruining document legibility.
Why PDF Compression Matters
Most email services enforce a strict 25MB attachment limit. High-resolution scanned documents and embedded graphics often breach this threshold.
Best Compression Techniques
- DPI Downsampling: Downscaling embedded images from 300 DPI to 150 DPI saves up to 70% space.
- Font Subsetting: Strip unused font glyphs from the document structure.