Website Ad Formats Explained: Banner vs Native vs Interstitial vs Sticky

Start with the page, not the format

Most format guides open with a spec sheet: here is a banner, here is a native unit, here are their eCPMs. That order gets the decision backwards. On the web, the page you are placing an ad on almost always tells you which format belongs there. The format follows the reading pattern, not the other way around. So work through these four questions about the page first, and the right format falls out on its own.

• Is a reader scrolling through long text, or scanning a short page and leaving quickly?
• Does the page have a natural pause (the end of an article, a completed action), or is it continuous?
• Is the page mostly text, or does it already look like a feed of cards and links?
• Would losing 5% of readers to bounce cost you more than the ad revenue gains?

If the answer is “long-form reading”: sticky/anchor + in-content native

A recipe, a how-to guide, a long opinion piece: anything a reader scrolls through for a while. A sticky (anchor) unit pinned to the bottom of the viewport stays visible without ever interrupting the read, and a native ad or two dropped between sections earns more than a banner without breaking the reading flow, provided it is clearly labeled as an ad. This combination is what most recipe, lifestyle, and news sites run, and it is a large part of why that niche supports the RPMs it does. See the RPM by niche guide for the numbers.

If the answer is “scan and leave”: banner, kept small

A landing page, a tool page, a quick-reference page: somewhere a visitor arrives with a specific question and leaves once it is answered. Anything disruptive here just accelerates the leave. A single, modestly sized banner earns a little without adding friction. Skip interstitials and heavy native placements entirely; you have almost no session length to spend them against.

If there is a genuine natural pause: one interstitial, never more

Some web experiences do have a real pause point: the end of a multi-page quiz, a completed calculator result, moving between chapters of a serialized story. A single full-page interstitial at that exact moment can work, the same logic that makes rewarded and interstitial ads work in mobile games (see the mobile format guide for that side of the comparison). The web-specific risk is Google’s own interstitial guidelines: an intrusive interstitial shown on arrival, or on a page that isn’t genuinely paused, can hurt your search ranking directly. Reserve this format for a real stopping point, never for the first page a visitor lands on.

If the page already looks like a feed: native, matched to the layout

A category page, a search results page, anything built from a grid or list of cards. Readers are already scanning past dozens of similar items, so a well-matched native ad styled as one more card earns significantly more than a banner wedged into the layout, because it doesn’t visually interrupt the scan pattern the page was already asking for.

What each format actually costs you if you get it wrong

Format choice is more than an eCPM decision. Used badly, each format has a specific way of costing you more than it earns:

• Sticky units that cover too much vertical space on mobile push the close button off-screen, an accessibility and usability failure that also violates most networks’ own policies.
• Interstitials on arrival are penalized directly by Google’s intrusive-interstitial guidelines and can suppress organic search traffic, the opposite of what you want on a site trying to grow via SEO.
• Native ads with no clear ad label erode reader trust and can violate disclosure requirements in several jurisdictions.
• Too many banners stacked on one page slow load time, which hurts both search ranking and the viewability rate advertisers are actually paying for. A format overused enough stops earning what its eCPM promises.

Putting it together

Most content sites end up running two or three formats at once, matched to different page types rather than applied uniformly: sticky plus native on long-form pages, a single small banner on quick-answer pages, and an interstitial reserved for genuine pause points, if any exist at all. The mistake to avoid is picking one format and applying it everywhere regardless of what the page actually is. That is how a site ends up with a banner on a long-form guide (underpaying) or an interstitial on a landing page (losing the visitor before they ever read anything).

Model what a given format mix would earn against your own traffic and niche.

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