What is Sellers.json?

Sellers.json is similar like ads.txt which allows authentic way for buyers to identify direct inventory versus reseller inventory.

Who are all declare the sellers.json?

Ad exchanges, Header bidding partners, Ad networks and Publishers.

Next question on your mind why publisher should declare?

Yes, publishers using the multiple resellers account and own Ad exchange accounts, so they should declare whether it is resellers or direct inventory.

How to declare sellers.json for Google Ad manager (GAM) publisher?

It’s a simple JSON file which should contains some required fill to identify the seller ID, domain name and type. Save the below syntax with the required field with name of “sellers.json”

Syntax for sellers.Json for a GAM publisher

	"contact_email": "",
	"contact_address": "Publisher, Inc., 500 California Street, Suite 40, San Francisco, CA 94104",
	"version": "1.0",
	"identifiers": [{
		"name": "TAG-ID",
		"value": ""
	"sellers": [{
			"seller_id": "pub-1234567891012345",
			"name": "Publisher, Inc",
			"domain": "example.com",
			"seller_type": "PUBLISHER"

Where to add this code in website?

Similar to ads.txt., the sellers.json to be added on the root domain of the website.

Example: https:www.yourdomain.com/sellers.json

This is the simple implementation details for sellers.json. If you need more detailed information. Follow the help article links.

Google Ad manager: https://support.google.com/admanager/answer/9761171
IAB: https://iabtechlab.com/sellers-json/

Thank you!!!!

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