This is a alt text modification plugin.
https://wordpress.org/plugins/update-alt-attribute/
Widgets · WordPress Plugins
Get access to data on 1,598 websites that are Update Image Tag Alt Attribute Customers. We know of 339 live websites using Update Image Tag Alt Attribute and an additional 1,259 sites that used Update Image Tag Alt Attribute historically and 68 websites in the United States.
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Get a list of 1,598 websites using Update Image Tag Alt Attribute which includes location information, hosting data, contact details, 339 currently live websites and an additional 172 domains that redirect to sites in this list. 1,259 sites that used this technology previouslyand 68 websites in the United States currently using Update Image Tag Alt Attribute.
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