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Website popups: when they help and when they drive customers away
One click, and Google will show my articles more often in your results.
Anyone searching "website with popups" is usually weighing it for one of two opposite reasons: they've seen a competitor use one to collect signups or sell more, or they're worried it will annoy visitors enough to drive them away. The honest answer is that it depends on which popup: a prompt to collect a contact or offer a discount is a marketing choice that can be changed whenever you want; a cookie banner isn't, because it follows a rule that leaves no room for choice.
How much they actually convert, and why there's no reliable number
Anyone looking for a reason to add a popup finds very different conversion figures online: companies that sell this kind of software report rates anywhere from roughly 3% to over 10%, depending on who's publishing the number. These are real figures, in the sense that they come from those vendors' actual customers, but they remain proprietary and self-interested: nobody publishes the sample size, the collection period, or a method that can be checked from outside, and it's only natural that a company selling popups won't publish the cases where they performed badly. As of today, there's no independent study with a public methodology that gives a single, reliable number. Anyone promising a precise percentage is selling a certainty the available data doesn't have.
The risk that touches Google rankings
There is, however, a concrete and primary-sourced risk for anyone showing a popup that hides a page's content from someone arriving via search. Google's support page on intrusive interstitials, updated December 10, 2025, warns that pages whose main content stays covered by something that has to be closed before it can be read can see worse search performance, and recommends a banner take up only a small part of the screen. The guidance isn't new: it traces back to a 2016 Google announcement, which became a mobile search signal from January 10, 2017, and the substance hasn't changed since, even though the text published today is more general than the original.
In practice, a full-screen popup that appears the moment the page loads, before a visitor has read a single line, is exactly the case this guidance flags. A small banner, easy to dismiss and shown at the right moment, such as when the visitor is about to leave the page, stays outside that problem.
The cookie banner isn't a marketing choice
This is where a clear line needs drawing. A newsletter or discount popup is a business decision: you can turn it on, remove it, or change its format whenever you like. The cookie consent banner, if the site uses cookies other than the strictly necessary technical ones, isn't optional, and its rules are set out in Italy's Cookie and other tracking tools guidelines, issued June 10, 2021 by the data protection authority and still in force. They ban pre-ticked consent checkboxes, require the reject button to carry the same visual weight as the accept button, ban blocking site access to anyone who doesn't accept unless an equivalent alternative is offered without consent, and state that simply scrolling the page doesn't count as consent. A rejected banner also shouldn't reappear on every visit: only if the processing conditions change, or at least six months have passed since the choice was made.
The guarantee
Thirty days to change your mind.
In more than ten years I have never had a client unhappy with the work delivered. That is why I can afford to say this: you have 30 days from accepting the quote to stop, or until the site goes live if that comes first. Within that window I refund everything you have paid and we part ways, with no further claim and no argument. There are no conditions to meet and nothing to prove: you decide.
You get me, within one working day.
No switchboard, no support form. If you write or call and I do not answer within one working day, you do not pay that month.
I take the risk at the start. It is the only way I have to say “trust me” and have it mean something.
What happens to those who get it wrong
This hasn't stayed on paper. On February 27, 2025, Italy's data protection authority issued a ruling against an online shop whose banner showed five buttons with unclear meaning, pre-ticked and unchangeable technical-cookie consent, and reappeared on every subsequent visit. In that specific case no monetary fine followed, only a warning, because the company had corrected the banner quickly after being challenged. In France, where the CNIL applies the same principle with more force against large companies, two separate rulings dated December 31, 2021 fined Google €150 million and Facebook €60 million, precisely because both sites let people accept cookies with one click but required more clicks to refuse them: the same imbalance between accepting and refusing that Italy's authority is now challenging too.
Where to start
The cookie banner has to be set up according to the authority's rules regardless of any other marketing decision: it's not a popup to experiment on. For a commercial popup, like the one used to collect newsletter signups I cover in website with a newsletter: when it makes sense, the logic is different: it's worth showing only at a specific moment, not the instant the page opens, and asking for one simple thing that can be accepted or dismissed in a single click. If you're not sure whether your site's popup follows both Google's guidance and the consent rules, get in touch and we'll look at it together.