Bulk upload product images to Shopify, matched automatically

Smart Bulk Image Upload is a Shopify app that bulk-uploads product images from a Google Drive or Dropbox folder and attaches each image to the right product and variant automatically.

Instead of dragging images into products one by one, you name your files after an identifier your catalog already has (a SKU, a barcode, a product title, a metafield value or a variant ID), pick the folder, and the app does the rest. It also writes SEO alt text on every image.

The app reads each image's file name and compares it with an identifier on your variants: SKU, barcode, product title, metafield value or variant ID, whichever you choose. Matching is case-insensitive.

So AB-1234.jpg lands on the variant whose SKU is AB-1234. The standard matching types are rule-based, so results are predictable and repeatable. If your file names are inconsistent, the optional AI matching (beta) reads them the way a person would, and you still review every match before anything is uploaded.

Yes, both. You pick one source per store in Settings and can switch at any time. Two differences are worth knowing:

• Google Drive: only files Drive reports as images are listed, so stray documents or ZIP files are ignored. The preview shows thumbnails and megapixel values.
• Dropbox: every file in the folder is listed, so keep the folder clean. Dropbox provides no thumbnails or megapixel data.

By default only the selected folder is read. Sub-folder scanning can be switched on for your store on request.

Name each file after the identifier, optionally followed by an underscore and a number for the image order: <identifier>_<order>.<extension>.

File name	Matches	Position
AB-1234.jpg	ab-1234	1st
AB-1234_1.jpg	ab-1234	2nd
AB-1234_2.png	ab-1234	3rd
7891234567890.jpg	7891234567890	1st

If the part after the last underscore is a number, it is the image's position; otherwise it stays part of the identifier. Upper and lower case don't matter. See the naming guide for every rule.

The usual causes, in order of likelihood, are duplicate identifiers, empty identifiers, naming slips and stale data:

1. Duplicate identifiers: two variants sharing a SKU or title. By default only the first keeps the image.
2. Empty identifier: variants without a SKU (or barcode or metafield value) are skipped.
3. A naming slip: a trailing space, a missing extension, a typo.
4. Stale data: you edited products after matching. Press Clear cache on the preview page and match again.

Every unmatched image is listed in the preview with the identifier the app looked for, and you can export the list as CSV.

Yes. Matching is completely read-only: the app shows a preview of every pairing (thumbnail, file name, position, the variant it will attach to, the identifier it matched on and the exact alt text) plus a list of every image that matched nothing.

Nothing is written to your store until you press Start upload, so you can run matching as often as you like while you perfect your naming.

Tens of thousands of images per run. Large catalogs are what the app was built for: it loads your full catalog in one bulk operation, downloads and uploads in parallel, and resumes after a restart. Merchants have used it to migrate catalogs of 40,000–60,000 SKUs.

Shopify limits how fast files can change in a store, so a very large batch runs steadily over hours rather than minutes. The app backs off and retries automatically, so you don't need to watch it.