Ponsiva . Pandian

Auto Image Alt Generator helps you keep your website accessible and SEO-friendly by automatically generating alt text for images when you upload them. 
If you forget to add alt text manually, this plugin fills it in for you — using a readable version of the image filename.
Example: 
 blue-tshirt.jpg → “Blue T Shirt”
Features 
* Auto-generates alt text when uploading images 
* Uses clean, readable text derived from the filename 
* Improves accessibility and SEO without extra effort 
* Lightweight — no settings or database bloat 
* Compatible with the Classic Editor and Gutenberg
The plugin does not overwrite existing alt text, ensuring your manually written content remains untouched.
<h3>License</h3>
This plugin is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
<h3>Credits</h3>
Developed by Ponsiva Pandian 
Website: http://iamponsiva.rf.gd

Auto Image Alt Generator

Automatically adds alt text to uploaded images based on their filename to improve accessibility and SEO.

George Pattichis

Automatically optimize images for SEO by generating alt text, titles, captions, and descriptions from filenames. Improves search rankings and accessibility.
Key Features: 
* Auto-generate image attributes from filenames for new uploads 
* Bulk update unlimited existing images with one click 
* Auto-insert title attributes into post HTML 
* Pre-Filter filename characters (hyphens, underscores, numbers, etc.) 
* Universal Support: Works with all WP editors (Classic, Block, Gutenberg)

Simple Image Meta Generator

Generate image meta data automatically. Add alt text, titles, captions and descriptions from filenames. Bulk update existing images.

Auto Image Alt Generator vs Simple Image Meta Generator