How the view-through window works
Someone is served your display or video ad. They do not click. Days later they search your name, land on the site and enquire. The view-through window is the setting that decides whether that enquiry is credited to the impression they saw, and it is defined per conversion action, separately from the click-through window.
Credit is only given when there was no ad click to attribute the conversion to, so a view-through conversion never competes with a click. Google reports these in their own column rather than folding them into the standard Conversions figure, which is a sensible piece of design: it keeps a soft signal visually separate from a hard one. The setting itself is a choice, and the longer you make it, the more conversions the ad will appear to have influenced.
Why the view-through window matters
It is the main reason upper-funnel campaigns look either worthless or brilliant depending on who configured the account. Awareness activity genuinely does produce demand that arrives later through search or direct traffic, and a click-only view of the world misses all of it. Equally, a generous window will credit an impression for a purchase that was always going to happen, which makes a weak campaign look indispensable.
The window also has to fit the buying cycle. A restaurant booking and a hospital procedure are decided on completely different timescales, and a window that suits one distorts the other. Setting it deliberately, rather than accepting whatever the account came with, is what makes view-through conversions worth reading at all.
Common mistakes with the view-through window
Extending it to rescue a campaign’s numbers is the worst one. Nothing about the campaign changes; only the accounting does. If a report improves after a window change, that is a bookkeeping event and should be labelled as one.
Adding view-through conversions to click conversions and presenting the total as results is the second, and it quietly overstates what the advertising did. The third is comparing windows across platforms. Meta and Google express these settings differently and count viewability differently, so a like-for-like comparison is not available, and browser restrictions on cross-site data mean impression-based credit is patchier than it used to be everywhere.
How to act on it
Set the window to something close to your real decision period, record the value, and leave it alone long enough to compare periods honestly. Report view-through conversions in their own line, never merged with clicked ones, so an owner can see exactly what is being claimed.
If a video or display campaign appears to depend entirely on view-through credit, test the claim rather than arguing about it: pause the campaign for a defined period and watch whether search and direct enquiries fall. That is a blunt test, but it answers the only question that matters, which is whether the impressions caused anything. Where budgets are small, as they often are in Nepal, that answer is worth more than any attribution setting.