Sitelink and extension auditing is the regular review of ad extensions (sitelinks, callouts, structured snippets, and more) across the account to ensure they’re present, relevant, current, and performing. Because extensions are free additional space on the results page that improves visibility and click-through, missing or stale ones forfeit clicks the account is already entitled to at no extra cost.
Ad extensions are the closest thing to free money in paid search, which makes it strange how many accounts neglect them. Sitelinks, callouts, structured snippets, and the rest expand your ad’s footprint on the results page at no additional cost per impression — more space, more links, more reasons to click, and a better effective ad rank. Yet audit almost any account and you’ll find extensions missing on key campaigns, generic boilerplate copied years ago, or sitelinks pointing to pages that no longer exist. For a broader view on budget allocation, read our breakdown of profit-on-ad-spend.
A regular extension audit is unglamorous and one of the highest-return-per-effort tasks available, because you’re reclaiming visibility you already qualify for.
What a neglected extension setup costs
Extensions don’t just look nice — they materially affect performance. Missing or stale ones leave measurable value on the table. To understand the underlying data infrastructure, review our guide on server-side tagging.
| Neglected | Audited | |
|---|---|---|
| Coverage | Patchy | Complete |
| Relevance | Generic | Tailored |
| Links | Some broken | All working |
| Footprint / CTR | Smaller | Larger |
Why extensions punch above their weight
Two things make extensions high-value. First, they enlarge your ad’s real estate, pushing competitors down and giving users more entry points — which lifts click-through. Second, Google factors expected extension impact into ad rank, so strong extensions can improve your position at the same bid. More space and better rank, for free, is a rare combination.
What extensions contribute
Relative value of a complete extension setup.
What an audit checks
A proper audit runs across the account on a cadence: are all relevant extension types present on every campaign, is the copy specific and current, do all sitelink URLs still resolve, and which extensions are actually getting impressions and clicks. Underperforming or broken extensions get fixed or replaced; high performers get extended to more campaigns. It’s maintenance, but maintenance that directly buys visibility.
Don’t extensions just run themselves now?
Google auto-generates some extensions, which helps coverage but produces generic results and can point to pages you wouldn’t choose. Auto-extensions are a floor, not a strategy — a human audit ensures the copy and destinations actually serve your goals.
Extensions are free real estate, and free real estate left to rot is pure waste. A regular sitelink and extension audit is among the cheapest ways to win more of the results page — reclaiming clicks and rank you’re already entitled to, for the cost of paying attention.
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