Image Compressor for Email
Shrink photos and graphics to the right width and file size for email, so your message loads fast and looks sharp on phones. Your images are processed on your own device and never uploaded.
80% looks the same as the original to most people.
What size should images be for email?
| Image | Width in the email | Good file size |
|---|---|---|
| Full-width banner or photo | 600 px (saved at 1200 px) | Under 150 KB |
| Half-width or two-column photo | 300 px (saved at 600 px) | Under 80 KB |
| Logo | 150 to 250 px | Under 30 KB |
| Signature headshot | 80 to 150 px | Under 20 KB |
Most email designs are 600 px wide, so that's the most common width. Keep the whole email, images included, under about 1 MB so it opens quickly on a phone connection.
Why save at double the width?
Phones and Retina screens pack two or three pixels into the space of one. A 600 px photo shown in a 600 px space looks slightly soft on them. Saving it at 1200 px and telling the email to show it at 600 px (with width="600", which the HTML code from this tool already includes) makes it crisp everywhere, and with sensible compression the file is still small.
Tips for images in email
- Always add alt text. Many people see emails with images turned off, and alt text tells them what's missing.
- Don't put your whole message in one big image. It looks like spam to filters and is unreadable with images off.
- Use JPG for photos and PNG for logos, text and graphics with see-through backgrounds.
- Skip WebP for email for now: some versions of Outlook don't show it.
- Host images on your website or email service and link to them. Images pasted in as code make the email heavy and can trigger Gmail clipping.
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Frequently asked questions
What is the best image size for email?
600 pixels wide for a full-width image, saved at 1200 pixels so it's sharp on phones. Aim for under 150 KB per image and under about 1 MB for the whole email.
Should I use JPG or PNG in emails?
JPG for photos, because it's much smaller. PNG for logos, text and graphics with see-through backgrounds. The automatic setting picks for you.
Can I use WebP images in email?
It's safer not to. Some versions of Outlook for Windows don't show WebP images. This tool saves JPG or PNG, which work everywhere.
Are my images uploaded?
No. The images are resized and compressed inside your browser and never leave your device.
Why is my iPhone photo not opening?
iPhone photos are often saved as HEIC, which most browsers on Windows can't open. In the Photos app, share or export the photo as a JPG first, or change iPhone Settings, Camera, Formats to Most Compatible.
Will compressing make my photo look worse?
At 80% quality most people can't see a difference in an email. If you can, raise the quality slider; the preview and file size update straight away.