https://wol.wordpress.org/plugins/media-library-helper/advanced/
Media Library Helper — Bulk edit image ALT, caption & description (advanced view) – WordPress...
media libraryedit imagealt captionadvanced viewhelper
https://wowslider.com/website-builder/ai-caption-generator.html
AI Caption Generator — Captions & Alt Text for Your Site
Use an AI caption generator to write image captions, alt text, and SEO descriptions for galleries, portfolios, and product photos — then export the whole site.
ai caption generatoralt textyour sitecaptions