A search or shopping ad promises something specific: a product, a price, a discount, free shipping or fast delivery. The customer clicks because of that promise and looks for its confirmation on the page. If they find a different product, a higher price, a discount hidden until checkout or a generic category, you have paid for a click that starts with distrust. The fix is not to rebuild the site but to put three things side by side: what the ad promised, what the page actually shows and what the customer's next step is.
A click is a promise the page has to keep
Google illustrates this in its help pages with a simple example: if the keyword is “discount shoes” and the ad promises shoes at 20% off, customers should be able to find and buy shoes at that discounted price on the landing page. The same guidance says the page should mirror the ad's call to action. Google describes landing page experience as, among other things, the usefulness and relevance of the information and the expectations users have based on the ad they clicked. It is one of the three components of Quality Score. Google itself, however, calls Quality Score a diagnostic tool rather than a direct input into the ad auction.
For a store owner, that gives a practical definition. An ad's promise has three parts:
- the offer – a specific product, range or category;
- the price or benefit – price, discount, free shipping, a gift, a delivery date;
- the next step – buy, choose a size, order by a certain time.
Usability research explains why this matters. Nielsen Norman Group describes every link as a promise and warns that any broken promise, large or small, chips away at trust and credibility. A strong cue from the search results is also wasted when the page does not give visitors enough signals that they are in the right place. A visitor from a paid ad arrives with a clear expectation, and the first screen should confirm it rather than send them searching.
The platforms do not tolerate mismatches
Matching the ad and the page is not only a performance question. Both major ad platforms in the Czech market write it into their rules.
Sklik, the Czech search ad platform, requires every mention of prices, price guarantees, discounts, promotions and offers to be true, stated on the landing page and unconditional. A mention of free shipping must be easy to find on the destination site. Among the most common reasons for disapproval, Sklik lists exactly the situations that keep recurring in online stores: an ad promises “Socks from CZK 29” while the cheapest socks on the page cost CZK 50; an ad offers “Up to 80% off” while the biggest discount on the page is 50%; or the ad promotes different goods from those the page sells.
Google Ads, in its misrepresentation policy, does not allow ads to promise products, services or promotional offers that are unavailable or not easily found from the destination, nor promotions unrelated to it. For shopping ads the requirements are more specific still: the link must lead to a specific product detail page, not a category or search page, and the page must show the title, image, price, availability and a buy button. The price on the page must match the price in the product data exactly. If it does not, Google may disapprove the product and recheck it within hours or days.
Czech law also covers discounts in ads. Information about a price reduction must include the lowest price at which the seller offered the product in the 30 days before the discount. A “30% off” in the ad text therefore has to match both the page and the product's price history.
Where the promise usually breaks
| Promise in the ad | What the customer finds | Why it is a problem |
|---|---|---|
| A “from” price | The cheapest variant is sold out or dearer | Sklik lists it as a disapproval reason |
| A discount or sale | Full price on the product, discount only in the cart | Doubt about whether the offer applies |
| Free shipping | Only above a threshold, condition hidden | Sklik requires an unconditional, findable claim |
| A specific product | A generic category or the homepage | The customer has to search again |
| Fast delivery, a date | A different date at checkout | The call to action does not match the page |
The most damaging case is a discount the page does not confirm next to the price. In product page testing, Baymard Institute observed a participant who saw a discount in a sitewide banner, but the product price did not reflect it; the reduction appeared only after adding the item to the cart. The same research found that an unclear price or discount leads to distrust and can end in abandoning the product or the site. In Baymard's benchmark, about one in seven desktop sites (14%) placed promotions far from the price.
Category or product page?
A general need, such as running shoes, can be served well by a category page pre-filtered to match the ad's promise. When the ad promises a specific model or price, however, it belongs on the specific page. An older Nielsen Norman Group study of 20 online stores found that difficulty getting from the homepage to the right product page accounted for 27% of user failures. Every extra step is a place where the customer can get lost.
The destination may not be chosen by a person
In Performance Max campaigns, Final URL expansion is on by default and can replace the final URL you set with another page on the same domain. The ad's promise can therefore lead to a page nobody has checked. If you use the feature, find out which pages the campaign actually sends visitors to, and exclude pages that do not keep the promise.
Store and ad data in one place
Korzaro connects your store data with your ad accounts, so you can make decisions from one set of numbers.
What we know about the impact, and what we don't
The direction is documented; the size is not. A study in Management Science analysed six months of data for 1,878 keywords from one large US retailer. Higher landing page quality was associated with a higher conversion rate – up to 22.5% between the lowest and highest rating – and a lower cost per click. Ad position, however, had a larger effect on conversion than page quality. Google research on thousands of ads found that ads following its quality guidelines had a 25.4% lower mean bounce rate, and that bounce rate tracked expert ratings of ad quality.
Both studies are older, come from US settings and measure association rather than proven cause. They do not tell you how much your store's conversion will improve after fixing one page. They are, however, reason enough to treat ad–page match as basic hygiene rather than an optional optimisation.
A weak conversion rate alone does not prove a mismatch
A low conversion rate can have many causes: price against competitors, broad keyword matching, the wrong audience, seasonality, stock availability or a measurement error. So do not conclude from the numbers alone that the ad and the page do not match. The numbers can show where to look – for example, an ad group with a much higher bounce rate than the rest. The diagnosis comes only from reading the specific ad and opening the specific page.
Watch for the opposite error too. A page may have kept the promise on the day the campaign launched and stopped keeping it later: the sale ended, the price changed, the cheapest variant sold out. Ad text with a fixed price or discount needs checking whenever a price changes or a promotion ends.
Illustrative example (invented): a search ad promises “Running shoes 30% off, free shipping” and leads to the category of all running shoes. Only two models out of forty are discounted, no discount is shown next to the price and free shipping applies from CZK 2,000. The most valuable fix here is not a category redesign: send the ad to a pre-filtered list of the discounted models, show the discount next to the price, and either make the shipping claim precise or remove the condition from the offer.
What to do now
- Start with the ads that cost the most. In Google Ads, begin with the Landing pages report, which lists the destinations of your Search, Display, Video and Shopping campaigns. In Sklik, review the ads and ad groups with the highest spend.
- Write down each ad's promise for every destination. Product, price or discount, conditions (shipping, delivery date) and the call to action, exactly as the customer sees them.
- Open the page as a customer. On a phone, in a private window, not logged in. Can you find the product, the price with the discount next to it and the button for the next step within a few seconds? Check the price in the cart as well.
- Fix the most valuable mismatch. Depending on the case, change the ad text, the destination URL or the page. In Performance Max, exclude pages that do not keep the promise.
- Link ads to price changes. When a promotion ends or a price changes, also check the ads that mention it.