Compress Images for Email Attachments Free
Overview
Gmail caps total attachment size at 25MB. Outlook limits to 20MB. Corporate servers often cap at 10MB. Sending 10 photos from a 12MP camera (3-5MB each) exceeds every limit. Compressing each to under 500KB lets you attach 40+ images to a single email without issue.
How to Use This Tool
Upload your images. Set quality to 75-80% and width to 1200px or less. Click Compress. Each image downloads under 500KB. Attach the compressed files to your email instead of the originals.
Ready to get started? It's free, no registration required, and your files never leave your device.
PDF Tool →Frequently Asked Questions
What is Gmail's maximum attachment size?
Gmail allows up to 25MB per email for total attachments. Files above 25MB must be shared via Google Drive link instead of as direct attachments.
What is Outlook's attachment size limit?
Outlook.com allows up to 20MB per email. Corporate Exchange servers often set stricter limits of 10MB or even 5MB. When unsure, target under 5MB total for all attachments.
Should I send photos as ZIP files to save size?
ZIP compression saves almost nothing for JPG and PNG images because these formats are already compressed. Zip archives are useful for grouping many files, not for reducing total size.