AdSense RPM dropped: what to check before blaming the niche

An AdSense RPM drop should be checked against coverage, traffic mix, ad impressions, and page changes before treating the niche as the cause.

Start with the denominator. RPM can fall because revenue fell, but it can also move when page views, ad requests, matched requests, or geography changed. A blog with more low-value traffic from one channel may earn less per thousand page views even if the content did not get worse. A site with fewer matched ads may show a lower number because coverage changed. A layout change may reduce viewability or ad load even while total traffic looks steady.

Use a triage order. First, compare the same weekday over several weeks, not just yesterday versus today. Second, split by country, device, page type, and traffic source. Third, check whether coverage, viewable impressions, or click-through changed before RPM. Fourth, check for policy alerts, ad serving limits, or invalid traffic adjustments. Fifth, review recent theme, consent, cache, or ad placement changes.

Do not average everything too early. A few high-traffic pages can hide a category problem, and a single viral page can distort the whole site. If the drop is only on new posts, it may be topic quality or audience fit. If it affects all pages after a template change, it may be technical.

The practical rule is: diagnose the denominator and the segment before rewriting the content plan.

AdSense RPM dropped: what to check before blaming the niche

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