Amit Moreno

Codenroll

AccessibleWP

An effective solution for accessible images on WordPress sites, allows you to find easily images that have no alternative text and provides additional accessibility settings for images.

AccessibleWP – ALT Detector

An effective solution for accessible images on WordPress sites, allows you to find easily images that have no alternative text and provides additional …

Vadim Bogaiskov

Media file (image) does not contain field for title attribute, only for alt attribute.
Plugin add text into title attribute from alt attribute when image is inserted into post if title attribute is empty.
As alternative see plugin <a href="https://wordpress.org/plugins/restore-image-title" rel="ugc">‘Restore Image Title’</a> by Les Bessant. 
The ‘Restore Image Title’ inserted the post title into title attribute.

Title like Alt

Restores the title attribute from Alt attribute when images are inserted into posts

AccessibleWP – ALT Detector vs Title like Alt