Hextom Bulk Product Edit can mass-set fields with rules like "set image alt text to product title." When that task runs across your catalog it replaces the alt attribute on every image β including the alt text you hand-wrote for accessibility and Google Images β with the templated value. Shopify stores only the current alt text per image and keeps no version history, so there is no native undo once the task finishes.
If you didn't already have a backup, those old values are gone β Shopify keeps no history.
The steps below recover what you can. To make the next time a 1-click undo instead of hours of CSV work: a daily snapshot of every SEO field. Free to monitor, no card β and SEO Vault only reads your store unless you click restore.
Protect my SEO free β never lose it again βSource: Shopify Help Center β "Add alt text to product media" and the product CSV "Image Alt Text" column; Hextom Bulk Product Edit app listing (bulk-edit alt text feature).
Never lose your SEO to an app again
SEO Vault keeps a daily snapshot of every SEO field on your store β meta titles, descriptions, alt-text, tags, handles (products AND collections) β and emails you the moment something changes in bulk, with the likely app responsible. One click restores yesterday's state, just the SEO fields. Free to monitor and get alerted; $14/mo for 1-click restore.
Protect my SEO β free β