Guide
A video has seconds to spend. A static ad has a glance. The question isn't how long it holds attention over time — it's whether it survives the instant the eye passes over it.
The instinct to ask "how long" comes from video, where attention plays out across a timeline you can watch decay. A static image has no timeline. It arrives all at once, gets a fraction of a second of ambient attention as the thumb passes, and either earns a stop or doesn't. There is no slow build to reward patience and no second act to recover a weak open. Everything the ad is going to do, it does in the glance.
So the real question isn't duration — it's whether the image clears two gates almost simultaneously: does it pull the eye enough to interrupt the scroll, and once it has, does the single message register before the viewer moves on? That's the whole job. A static that needs to be studied to be understood has already lost, because nobody studies a feed.
Once someone stops, the attention that follows — the dwell — is still short. A couple of seconds of consideration is a good outcome, not a disappointing one. You're not trying to hold someone for thirty seconds; you're trying to convert one pause into one understood idea. Dwell on a static is earned by a clear focal point that tells the eye where to land first, a message legible at a glance, and just enough visual interest to make the pause feel worth it.
This is why a busy static ad underperforms a simple one so often. When the image gives the eye five things to look at, it effectively gives it none — the viewer can't resolve where to look inside the tiny window they've allotted, so they resolve it by scrolling. The same logic sits behind a strong video thumbnail: a single clear subject beats a crowded one because the glance can't afford to hunt.
With video you're managing an attention curve — a hook, a drop, a peak, a close — and you can lose someone in the middle and win them back. A static has no middle. It compresses hook, body, and close into one composition the viewer takes in almost instantly. That's a constraint, but it's also a strength: nothing gets buried at second twelve, because there is no second twelve. The one idea is either on the surface or it isn't there at all.
It also changes how you compare formats. Deciding static vs. video isn't about which holds attention longer — video always "holds" longer by definition. It's about which wins the stop more efficiently for your message. Some ideas need motion to land; plenty land harder as a single frame that doesn't make the viewer wait for anything.
Because a static ad lives or dies in an instant, it's worth knowing whether that instant works before you put spend behind it. A predicted attention read scores the image against a benchmark of top-performing ads and tells you whether the composition is likely to pull the eye and register its message — the glance-level questions that decide a static's fate. It's the same screen you'd run on packaging or a banner, applied to the one frame your ad actually is.
Keep the limit in view: the score predicts attention, not conversions. It can flag a static that won't win the pause; it can't tell you whether the offer, the price, or the landing page closes once someone does stop. Use it to make sure the image earns its glance — and leave the selling to the parts of the funnel a creative screen was never meant to judge.
Upload your image and see whether the composition earns the stop against a benchmark of top-performing ads — up to 8 free credits.
Score Your AdIn a scrolling feed, a static ad gets a fraction of a second of ambient attention before the thumb decides whether to stop. That first micro-glance isn't reading — it's a snap judgment on whether the image is worth pausing for. If it earns the stop, the useful dwell that follows is measured in a couple of seconds, not minutes. So the honest answer is: long enough to survive the glance and reward one short pause. A static ad doesn't hold attention over time the way a video does; it wins or loses in the instant the eye passes over it.
Dwell time is how long a viewer's attention rests on the image once they've stopped scrolling past it. For a static, dwell is short by nature — there's no unfolding story to hold them, just a composition they take in almost at once. Good static dwell comes from a clear focal point that pulls the eye, a single legible message, and enough visual interest to earn a beat of consideration. Long dwell isn't the goal; getting the stop and delivering the one idea before they move on is.
Upload the image and PreTestAds predicts the attention it's likely to earn and scores it against a benchmark of top-performing ads. For a static the read is about the glance: does the composition pull the eye to the right place, and does the one message register fast? It predicts attention, not conversions — it can tell you whether the image is likely to win the pause, not whether the offer behind it closes the sale.