Submitted by Joe Sheridan Fenn on Tue, 2017-12-19 16:03
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Drupal 8 - Media - Image Media Type - Manage Form Display Tab - Image Form Sample Before

1. Image Media Type Submission Form Sample - Before

If we take a look at the Image submission form right after the Width and Height fields are added, you'll see that these new fields actually display at the bottom of the form.

We actually don't want these fields to show at all on the submission form because they will be automatically filled when a user uploads an image. Making them available for editing will only serve to mislead the user, and possibly mess up some data along the way.
Drupal 8 - Media - Image Media Type - Manage Form Display Tab - Original Field Order

2. Navigate to Image Media Type Form Display Tab

Go to Admin Menu > Structure > Media Types > Image > Manage Form Display
Drupal 8 - Media - Image Media Type - Manage Form Display Tab - Hide Height and Width

3. Hide Width and Height Fields

Notice that there exists a Disabled section at the bottom of the screen

Drag both the Width and Height fields down into this section

Click the Save button
Drupal 8 - Media - Image Media Type - Manage Form Display Tab - Image Form Sample After

4. Image Media Type Submission Form Sample - After

Looking at a sample Image submission form, we can now see that the Width and Height fields are appropriately hidden.