Adds an alternative text field to Image assets, so that you don't need to use the image Title field (which would typically be more succinct than useful alt text).
As a bonus feature, when adding an image to an HTMLEditorField, the alt text field gets pre-filled with any asset alt text.
Install via composer composer require purplespider/asset-alt-text
dev/build
Go to the Files and select an image to see the new field:
To make use of the alt text value in your templates, just use $AltText. e.g.:
<% with BannerImage %>
<img src="$URL" width="$Width" height="$Height" alt="$AltText" />
<% end_with %>