How to compress images for email
Email attachment limits include the complete message, not just one photo. Resize images for how recipients will view them, keep a little size headroom, and use a share link when the originals matter.
By PixoPublished
Plan for the whole message
Providers apply limits to the message or attachment set, and email transport can add overhead. Do not aim at the exact published maximum. If several photos must travel together, divide the available budget across them and leave room for the message.
Resize for viewing, not printing
A phone photo may be 12 or 48 megapixels, while an email recipient usually views it inside a window smaller than 2000 pixels wide. Resizing removes data they would not see. Preserve the full-resolution original separately if it may be printed or edited.
Use compatible output
JPG remains the safest format for photos sent to varied mail clients and office software. WebP can be smaller, but confirm the recipient's workflow accepts it. PNG is appropriate for screenshots and graphics with text, not most camera photos.
Check details before sending
Open the compressed file and inspect faces, fine text, smooth skies, and dark gradients. Confirm orientation and remove location metadata when it is not needed. Pixo's compressor and EXIF remover run locally in the browser.
Know when not to attach
If the recipient needs original photos, a large batch, or files that must not be recompressed, use a time-limited secure transfer link. Share the link through the intended channel and verify the recipient when the material is sensitive.