2026-07-274 min read
How to Reduce PDF File Size for Email Attachments
Most email servers reject attachments over 25 MB. Here's how to shrink your PDF to fit.
Hit 'send' only to get a bounce-back because your attachment is too large? Here's how to fix that.
Use PDF Compression
The fastest way to reduce size is PDF compression. Upload your PDF, choose Maximum compression, and download the result. Most PDFs shrink by 50-80%.
Remove Unnecessary Elements
Before compressing, remove blank pages, annotations, and metadata — these all add to file size.
Convert Images Within the PDF
If your PDF is image-heavy, convert it to a lower-resolution version by rasterizing at screen DPI.
Split Large Documents
For extremely large files, consider splitting into chapters or sections and sending them separately.
Alternative: Share a Link
If compression isn't enough, consider cloud storage links instead of attachments.