Thank you @brgreene for mentioning our WP Sheet Editor plugin. We’ve received many questions from this support thread so I want to add more information.
We have a spreadsheet editor for Media Files where you can view all the images and edit thousands of images quickly.
The sheet has columns for all the information, including the title, alt text, caption, description, associated post title (i.e. product name where the image was uploaded), user who uploaded the image, upload date, taxonomies of the associated post (i.e. categories, tags, brands, attributes of the product where the image was uploaded), etc.
And you can bulk edit using all those columns. For example, you can automatically copy the “associated post title” to the “alt text” column for all images at once, set alt text from the post categories, tags, or attributes.
You can edit in our spreadsheet on wp-admin (no need to import/export), and you can also export/import to edit in Google Sheets or Excel.
You can make advanced searches by any field. I.e. Find all images from a product category, tag, attribute, or post title keyword. etc. Or find images without alt text.
This is the official page of the plugin.
