A common file-size limit

How to make an iPhone photo under 5 MB.

When a form, email, or profile asks for an image under 5 MB, the job is simple: make a smaller copy that stays below the stated limit. Your original should stay untouched.

A current example: Google Workspace profile-photo requirements set a maximum file size of 5 MB for JPEG and PNG images. This is an example of a size limit, not a claim that UnderLimit works with Google Workspace.

UnderLimit accepts one still JPEG, HEIC or PNG image up to 250 MB, 50 million pixels and 32,768 pixels per edge. Animated images and video are not supported. Check the destination’s format, dimensions and other requirements before uploading the verified copy.

A focused workflow

Work from the limit, not from guesswork.

  1. 01

    Check the requirement

    Confirm the maximum size and the required image format before you make a new copy.

  2. 02

    Set the limit

    Choose your still image in UnderLimit, then use the exact maximum the destination allows.

  3. 03

    Export the copy

    Export the verified smaller copy, then use that copy for the form, email, or profile.

Private by design

The image stays on your iPhone.

This guide covers UnderLimit’s still-image workflow. The version 1.6 workflow also accepts 2–10 images, shrinks one supported PDF up to 100 pages and 100 MB, and combines 2–10 PDFs up to 50 total pages and 100 MB total.

No AI services. No online processing. Your file is handled entirely on your iPhone.

Available for iPhone

Make an iPhone photo fit under 5 MB with UnderLimit.

Set 5 MB as the maximum, then export a JPEG that UnderLimit has verified against the limit.

Buy UnderLimit on the App Store