The discussion addresses how to add and manage Google Shopping custom labels in Shopify, which are no longer directly visible in the product admin interface.
Solution for Adding Custom Labels:
Custom labels (0-4) are stored as product metafields in Shopify
To make them visible: Navigate to Settings → Custom Data → Products → Add Definition
Use namespace and key format: mm-google-shopping.custom_label_0 (repeat for labels 1-4)
Select “Single line text” as the type and pin the definition
Changes sync to Google Merchant Center within 1-2 days
Bulk Editing Challenges:
Shopify’s native bulk editor lacks search functionality for large catalogs (3500+ products)
Standard CSV exports require using product metafields, not variant metafields
Important Limitation:
Google restricts each custom label attribute to 1,000 unique values (5,000 total across all five labels). Using product names as custom labels may hit this limit quickly for larger catalogs.
Current Status (May 2025):
Custom label fields now appear by default in Shopify’s product page when pinned, though proper configuration of product-level metafields remains necessary for Google Shopping integration.
Summarized with AI on October 28.
AI used: claude-sonnet-4-5-20250929.
Hello, I am trying to filter products in Google Shopping Ads. I would like to use custom labels, but I can’t find where to add them in the shopify product admin page. When I go to an indivudual product, I can’t find where to add values to custom labels?
Second, There is a bulk editor for products. When I go to the Google & Youtube app and select manage products, from the overview tab, in the products status area. But the list of products that shows, has no search feature and going trough 3500 products by going trough the list, page by page, 100 products per page is pretty tedious. Is it possible to have that bulk editor show a search field? Then I could also add custom labels for the shopping feed in the bulk editor.
And finally, if I add values to custom labels, will they get trough to merchant center and google shopping ads?
Shopify used to have a popup that would display the Google Shopping fields, including the custom labels, but it was removed a while ago.
Google Shopping fields (including Custom labels 0-4) are stored as product metafields within Shopify. One way to make them visible on the Shopify admin product detail pages is to add a metafield definition for each of the labels. To do this you would need to open up the Shopify admin and:
Go to Settings → Custom data
Click on Products, then choose Add Definition
Enter the following:
Name: Custom label 0
Namespace and key: mm-google-shopping.custom_label_0
Select type: Single line text
Make sure the ‘Definition pinned’ button at the top is selected and then click on Save
Now, if you go to a product page in the Shopify admin, you’ll see the metafield for the Custom label 0 displayed at the bottom of the page. You can repeat the process for custom labels 1-4 so you can view and edit each label directly for an individual product in the admin.
Once you edit the product in Shopify it may take a day or two for that data to sync to Shopify if you’re using the standard Google Shopping sales channel app.
Unfortunately I’m not aware of a good way to edit these in bulk though using the Shopify admin. I did help develop the Ablestar Bulk Product Editor app though which lets you quickly edit Google Shopping fields (among others).
You can do a whole range of things like “Set Custom label 0 to be the name of the vendor for products with a price > 10”. It’s also possible to export/update this data from a spreadsheet and undo the edits if you’ve made a mistake.
Happy to answer any other questions about Google shopping data/metafields if you have them.
for a shop with smaller turnover, shopify is somewhat overwhelming in the number of apps you need to/can add and the cost of them all. So thanks for the suggestion of the app with even more features. But I have to save and go for the settings solution. Which I implemented and works great! Now waiting for the product to transfer from GMC to Google Ads and off I go with shopping ads.
Hi, can I use the List of Value option for such fields? My case is this: we sell bouquets, and each of the bouquets consists of a list of flowers that are included. That is, one bouquet can consist of 5 types of flowers, like Roses, Hydrangeas, etc. And there are more than 30 of them in total. Obviously, 5 fields are not enough to transmit all these parameters. Is it possible to add 5 parameters at once in one field, for example, Custom label 0, so that I can then sort and group products by them in the merchant center? Or perhaps there is another way to perform this task?
I know this thread is a couple of years old now, but it this fix still relevant?
I DO see a section for Google Custom Labels in the Shopify Product page by default currently (May 2025) - though I did have to choose to pin them so they appear at the top of the Variant metafields section.
However, what I enter here (“TEST”) doesn’t seem to appear in the Google Shopping / Custom Label X columns when I export the product data to a csv.
I think the reason the metafields aren’t showing in the export is that your screenshot is showing variant metafields, while the standard Google Shopping / Custom Labels are product metafields. If you do the same thing, but with product metafields it should show up in your export.
Create up to 1,000 unique labelsfor each custom label attribute across your account (up to 5,000 labels total, 1,000 labels per attribute). If you submit products with a custom label after you exceed the limit, those additional labels won’t be taken into account for both reporting and bidding.
If I’m reading that correctly, you would be unable to add more than 1,000 products if using Product Name as one of the Google Custom Labels - is that correct?
Why am I doing that, you may ask? I’m following a guide to set up my first ads campaign which recommends using Custom Labels for this purpose so you can more readily identify your products in Googler Ads rather than all looking like shopify_xx_12325648590_162784662337, etc.
