How to Compress Images for Email

Email systems often impose attachment limits, and large images can take longer to upload and download. The simplest way to prepare a photo for email is usually to reduce its dimensions and then use a sensible photographic compression setting.

Resize before chasing tiny quality settings

A phone photo can be several thousand pixels wide even though the recipient may only view it in an email window. If the image does not need to be printed, a smaller pixel width can make a large difference. Resizing also avoids throwing away excessive image quality just to hit an attachment limit.

Use JPG for ordinary photos

JPG is widely supported and works well for photographs. PNG is usually better reserved for screenshots, graphics, or images where transparency or lossless output matters. If the source is HEIC and the email system rejects it, convert it to JPG first.

How to prepare a photo

1. Decide how large the recipient needs the image to appear.
2. Use Resize Image to reduce excessive dimensions.
3. Use Compress Image if the file is still too large.
4. Open the exported file and make sure text, faces, and important details still look clear.
5. Attach the copy rather than replacing your original photo.

If the email service still rejects it

Check the service's current attachment limit and the total size of all attachments, not just the image you are editing. If several photos are being sent together, reducing each one moderately may be more useful than compressing one image aggressively.

Privacy reminder

For sensitive images, remember that email itself is a transmission service. A browser-based image tool can create a smaller copy, but that does not change how the final attachment is handled by the email provider or recipient.