How long should an ad hook be?

For video, the hook is usually the first one to three seconds, because that is when most viewers decide to keep watching or scroll past. For static ads, it is the headline and main image, which should be readable at a glance.

How do I know if my hook is working?

Look at how many people keep watching after the first few seconds and at the click-through rate. If an ad gets impressions but very few viewers stay past the opening, test a new hook while keeping the rest of the ad the same.

Hook (ad hook)

A hook is the opening line, image or first few seconds of an ad that stops the scroll and gives a viewer a reason to keep watching or reading.

What is a hook?

A hook is the first thing a person sees or hears in an ad. In a video it is usually the first one to three seconds. In a static ad it is the headline, the main image or the first line of text. Its only job is to stop someone who is scrolling fast and make them pay attention for a moment longer. Feeds on Meta, TikTok and other platforms move quickly, and most people decide almost instantly whether an ad is worth their time. If the hook fails, the rest of the ad never gets watched, no matter how good the offer or the product is. That is why the hook often decides whether an ad wins or loses.

How a hook works

A hook works by creating a small moment of curiosity, surprise or recognition. Imagine a skincare brand selling a face serum. A weak opening shows the bottle on a white background with the brand name. A stronger hook opens on a close-up of someone wiping off makeup with the words “I stopped buying foundation after this.” The viewer wants to know why, so they keep watching. Common hook styles include a bold claim, a question that names a pain point, a surprising visual, a before-and-after, a customer talking straight to camera, or a pattern break such as an odd sound or motion. The best hooks feel native to the feed and speak to one specific person and problem.

When to use it

Every ad needs a hook, but testing new hooks matters most when an ad is getting impressions but few people watch past the first seconds or click. It is also the cheapest thing to test. You can keep the same body, offer and landing page and only swap the opening, which isolates what changed. Hooks are especially important for cold audiences who have never heard of your brand, because they have no reason yet to care. Warm audiences who already know you can respond to softer openings like a reminder or a discount. The trade-off is that very aggressive hooks can win attention but attract the wrong clicks, or break ad policies if they overpromise.

How to improve your hooks

Start by writing many hook variations for each ad, then test three to five at a time against the same body. Lead with the customer’s problem or desired result, not your brand name. Show motion or a face in the very first frame, since static openings are easy to skip. Add on-screen text so the hook works with the sound off. Borrow angles from real customer reviews, because they use the words buyers actually search with. Study what competitors keep running for a long time, since long-running ads usually have hooks that work; AdLibrarySpy shows competitors’ live Meta ads for free so you can see those openings. Finally, judge hooks by early watch time and click rate, not by opinion.

Hook vs angle

A hook and an angle are related but not the same. The angle is the overall idea or argument of the ad, such as saving time, looking younger, or replacing an expensive habit. The hook is the specific opening that delivers that angle in the first seconds. One angle can have many hooks. For example, a “saves money” angle could open with a receipt, a price comparison, or a customer saying how much they spent before. When an ad underperforms, it helps to ask which part failed. If people stop but do not buy, the angle or offer may be wrong. If people do not stop at all, the hook is the problem.

Read the guide: How to find winning Facebook ads (without seeing spend)

Questions

How long should an ad hook be?: For video, the hook is usually the first one to three seconds, because that is when most viewers decide to keep watching or scroll past. For static ads, it is the headline and main image, which should be readable at a glance.
How do I know if my hook is working?: Look at how many people keep watching after the first few seconds and at the click-through rate. If an ad gets impressions but very few viewers stay past the opening, test a new hook while keeping the rest of the ad the same.