Content decay is the gradual decline in search visibility, clicks and traffic for a page that used to perform well. Unlike a sudden drop, it happens slowly over months, which is why it often goes unnoticed until a page that once brought in steady enquiries has almost faded from view.
How content decay works
A page rarely decays because something broke. More often, the world around it moved. The usual causes are:
- The content went out of date. Prices, rules, screenshots and examples age. A guide to UK energy grants written before a scheme changed is no longer the best answer.
- Competitors published better pages. Someone wrote a clearer, more complete or more current answer.
- The search results changed shape. AI Overviews, featured snippets, videos or a map pack now sit above your result, so the same ranking earns fewer clicks.
- Search intent shifted. People searching the term now want something different, such as a comparison rather than an explanation.
- Your own site competes with the page. A newer post on the same topic splits the signals between two URLs.
- Algorithm changes. A core update can reassess how well a page serves the query.
Demand itself can also fall. If fewer people search for a topic, clicks drop even when the page holds its position, which is a different problem from decay.
Why it matters
For many UK businesses, a small number of pages bring in most organic enquiries. If one of those slowly loses half its clicks over a year, the impact on the pipeline is real, and it usually goes unexplained because no single week looks dramatic.
Decaying pages are also the cheapest wins available. The page already has a history, links and some authority. Updating it is usually faster than writing something new, and the effect tends to show sooner.
Common mistakes
- Comparing a page’s traffic month on month across a seasonal dip and mistaking normal seasonality for decay.
- Changing the published date without changing anything else. Google advises against it, and readers who spot old facts under a new date trust the page less.
- Rewriting the whole page when only one section, such as an outdated table, needs fixing.
- Blaming content for a drop caused by tracking changes, a noindex tag left after a redesign or a broken redirect.
- Waiting for a page to collapse before looking at it.
How to act on it
In Google Search Console, open the Performance report, compare the last twelve months with the twelve before, and sort pages by the change in clicks. For each page that has dropped, check whether impressions fell (visibility or demand changed) or only clicks fell (the results page changed or your title is less appealing).
Then search the main query yourself and look at what ranks now. That tells you whether the fix is new information, a better structure, a different angle or a clearer title. Update the page with substance, keep the URL, and note the date so you can measure the result.
Not every decaying page deserves the same effort. Start with pages that used to bring in enquiries or sales, then guides that support those pages. If two of your own pages now split the same query, merging them may do more than updating either. If a page covered something your business no longer offers, letting it go and redirecting it can be the right call.
Finally, build a review into your routine. A quarterly look at your top pages catches decay early, and a content refresh is far easier than a recovery. Tracking and fixing decay is a regular part of my content SEO and strategy work.