Make photos smaller for email
A few large photos can quickly fill up an email’s attachment allowance. SizeCap helps you shrink them together, so you don’t have to resize each one by hand.
Keep some room for the email itself
Check your email service’s limit before you start. The recipient’s service may have a different limit, too. Some limits apply to attachments; others include the whole message.
Photos can take up roughly a third more space once your email app prepares them for sending. If the whole message must fit within 10 MB, for example, try a total photo limit of 6 MB. That leaves some room, though you’ll still need to check whether the email goes through.
Why do attachments take up more space in an email?
Email apps commonly convert attachments into text using Base64. This adds roughly a third to their size, plus a little more for line breaks and the rest of the message. The MIME specification explains how it works.
Get your photos ready to send
- Add your photos to SizeCap and choose a total size comfortably below the email limit.
- Compress them, then check their size and how they look.
- Download individual JPEGs if you want the recipient to preview them easily. Choose ZIP if you’d rather keep them together and the email service accepts ZIP files.
- Attach the downloaded files in your email app. If the message is still too large, lower the limit or send the photos in smaller groups.
Will a ZIP make them even smaller?
Not with SizeCap. The JPEGs are already compressed, and the ZIP simply keeps them in one file. It will be slightly larger than the JPEGs added together.
Your photos stay on your device while SizeCap works. They’re only sent to someone else when you attach and send them through your email app.
Uploading to a form instead? See how to set a limit for several photos or reduce one photo to a KB limit.