Compress Images for Email on Mac

Who this is for

Anyone who hits an attachment size limit when sending photos or screenshots.

The problem

Modern phone cameras produce images of several megabytes each. Mail providers typically cap total attachment size, and large attachments are also slower to send and more likely to be rejected by the recipient's server.

How PixPack is used

• Add the photos or screenshots you want to send.
• Select the Email preset.
• Optionally resize to a smaller maximum width — for email, dimensions matter as much as quality.
• Check the reported file sizes in the preview.
• Export the compressed files and attach those instead of the originals.

Expected result

Attachments that fit within the mail provider's limit while remaining readable on screen. Because compression happens locally, nothing is uploaded to a third-party service on the way.

Tips

• For a single photo, resizing to a moderate maximum width usually saves more than lowering quality alone.
• Keep the original files in case the recipient needs the full-resolution version.
• For many images, consider compressing the whole folder in one batch before attaching.

Key facts

• Email preset
• Local compression before attaching
• Resize to reduce size quickly
• Per-file size reporting