Well-written ad copy does more than generate clicks: it qualifies the visitor before they even reach the site, which mechanically improves downstream conversion rate.
Start from search intent, not the product
Before writing a single headline, clarify what the person typing this query is actually looking for: are they comparing options, looking for a price, wanting an immediate solution? The ad must directly answer that intent, not generically describe the product.
Include the keyword in the headline
A headline that echoes the exact terms of the search improves perceived relevance and, often, click-through rate. Google also bolds matching terms, which visually reinforces the ad’s relevance in the results.
Clearly differentiate the offer
Price, delay, guarantee, specificity: the ad must give a concrete reason to click your result rather than a competitor’s shown just above or below. A purely descriptive ad with no differentiation blends into the crowd.
Qualify to avoid unprofitable clicks
Paradoxically, a good ad can also discourage clicks that would never convert. Mentioning a price, a prerequisite or an eligibility criterion filters out the least-qualified visitors before the click, which improves actual conversion rate even if overall click-through rate drops slightly.
Use every relevant extension
Sitelink, callout, call, and price extensions: each extension used increases the ad’s display surface and can improve Quality Score. An ad with no extensions leaves unused space that competitors fill.
Test at least two variants per ad group
Ad rotation lets you objectively compare several approaches (rational vs emotional angle, price emphasis vs quality emphasis). Without comparative testing, it’s impossible to know whether an ad underperforms due to budget or a weak message.
Quality Score, directly influenced by your ad quality, is covered in our dedicated optimization guide.