Turn product image URLs into review-ready alt text
Paste image URLs, one per line. AltCaption turns product photos, gallery images, and CMS exports into alt text rows your team can review, copy, download, and import. For WordPress cleanup, paste rows as mediaID<TAB>imageURL to get WordPress-ready CSV and TSV output.
Product catalogs
Generate draft alt text from storefront, marketplace, supplier, or CDN image URLs.
CMS imports
Prepare review-ready rows before moving media libraries into Shopify, Webflow, WordPress, or a custom CMS. Add media IDs when your import or WP-CLI step needs them.
Launch cleanup
Fix missing or vague alt attributes before publishing a product launch or site refresh.
Bulk image alt text for SEO and accessibility
Paste a list of image URLs and generate descriptions that can be reviewed, copied as a spreadsheet-friendly table, and added to product feeds, gallery records, or page templates. This is useful when missing alt attributes are spread across a catalog instead of one page.
The input stays credential-free. One image URL per line still works. If you have a WordPress media export, paste each row as a media ID, a tab, then the image URL. AltCaption keeps the generic TSV output and also gives you WordPress-ready rows with id, source_url, and alt_text. See the WordPress workflow.
AltCaption is tuned for concise, useful image descriptions rather than keyword stuffing. Use it to describe what is visible in each product image, then edit any brand, SKU, or page context details that only your team knows.
Try the bulk URL shape before starting a trial.
Paste product image URLs, preview the TSV output format, then start a 3-day trial when you want AltCaption to generate 10 rows from your own batch.
Sample TSV preview
| ID | URL | Review-ready alt text |
|---|---|---|
| 1432 | https://cdn.store.com/products/linen-shirt-sage.jpg | Sage green linen button-up shirt on a model wearing white jeans. |
| 1433 | https://cdn.store.com/products/coffee-dripper-black.jpg | Matte black ceramic pour-over coffee dripper with a paper filter inserted. |
| 1434 | https://cdn.store.com/products/canvas-tote-tan.jpg | Natural canvas tote bag with tan leather handles on a white background. |