Guide
Email Image Attachment Guide
Updated: 10 March 2026
Written by the ImageReady editorial team. Reviewed for common office, client, and sales workflows.
Email still breaks image workflows more often than it should. This guide focuses on sending files that are small enough to attach, clear enough to read, and compatible enough to open quickly.
1) Choose the right format
- Use JPG for photos, scanned documents, and general office sharing.
- Use PNG for screenshots that contain fine text or UI details.
- Avoid sending WebP unless you know the recipient workflow supports it.
2) Resize before attaching
- Most email attachments do not need camera-original dimensions.
- For general review, 1200-1600px wide is often enough.
- For screenshots, keep dimensions just large enough for text readability.
3) Use quality targets intentionally
- Start JPG around 80-85% quality.
- Review any text overlays or labels before sending.
- If the email is sales- or approval-critical, prioritize readability over tiny savings.
4) Final checklist before send
- Open the exported file locally and inspect at normal size.
- Confirm filenames are clear if multiple attachments are included.
- Check the total message size before sending to large groups.