Hi,
I’m currently working with the *Google Ads API v21 (gRPC via Node.js)* and
trying to use *ReachPlanService.generateReachForecast* to get traffic
estimation *before publishing Demand Gen campaigns*.
[image: Screenshot 2025-10-13 123711.png]
I am *image-only Demand Gen ads (non-video) when create a campaign i
assigned 1:1 image asset only and the whole campaign are able to see in my
Google Ads Account*
I’m initializing gRPC clients manually in Node.js, using the compiled
proto definitions from:
[image: Screenshot 2025-10-13 121603.png]
Here’s how I load my descriptor and create clients:
[image: Screenshot 2025-10-13 121800.png]
And metadata =
[image: Screenshot 2025-10-13 121847.png]
This is my request and how i call the service =
const request = {
customer_id: '1234567890',
campaign_duration: { duration_in_days: 30 },
planned_products: [
{
plannable_product_code: 'DEMAND_GEN_MAX_CONVERSIONS',
budget_micros: '150000000',
conversion_rate: 0.02
}
],
currency_code: 'USD',
targeting: {
plannable_location_ids: ['2392'] // Malaysia
}
};
I did saw this:
[image: Screenshot 2025-10-13 122723.png]
However, I want to ask
1. Does ReachPlanService.generateReachForecast currently support *Demand
Gen campaigns that use only image assets* (without any video)?
2. Is there a recommended alternative to estimate reach/clicks before
publishing Demand Gen image campaigns?
Best regards,
* Cheah Li Hong *
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