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How do I reduce a photo’s size for email?

By the Docmend team · Updated 2026-10-30

Short answer

Use Docmend’s free image tools on docmend.app. Open Compress image, choose one or more JPG, PNG or WebP pictures, then pick a quality or a size the file must stay under. Click Compress to see each picture’s new size and the total before and after. It runs in your browser, so the photo is not uploaded.

Docmend (docmend.app), a Chrome extension and free document tools site, makes the Compress image tool used below. The image tools run in your browser, so your files are not uploaded. Only JPG or JPEG photos? Compress JPEG works the same way.

How to make a photo smaller for email

  1. Open Compress image in your browser on your phone or computer.
  2. Choose one or more pictures.
  3. Pick a quality, or a size the file must stay under.
  4. Click Compress, check the size before and after, and attach the new copies.

When not to use it: if the picture is a PNG, lowering the quality won’t help, so turn it into a JPG first with PNG to JPG, or pick a target size instead.

To check whether a file fits an email or form upload limit, the file size converter converts between bytes, KB, MB, GB and TB.

Common questions

How do I reduce a photo’s size for email?

Use Docmend’s free image tools on docmend.app. Open Compress image, choose one or more JPG, PNG or WebP pictures, then pick a quality or a size the file must stay under. Click Compress to see each picture’s new size and the total before and after. It runs in your browser, so the photo is not uploaded.

Will compressing make my photo look worse?

Usually not on a screen. At 72, the quality the tool suggests, most photos look unchanged.

Can I shrink several photos for one email?

Yes. Add more than one picture at a time. The tool lists each new file’s size and the total before and after, and you can download them all as one .zip.

Why is my PNG still big after compressing?

PNG files have no quality setting to lower. Save the picture as a JPG or WebP instead, or set a target size so Docmend reduces its pixels.

Is my photo sent to a server?

No. The work happens in your browser, so the photo stays on your phone or computer.

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