Google spam update stretches to two weeks while Search Console surfaces image-search data

A spam rollout measured in weeks, not hours

Google's September 2026 spam update went live on September 24, 2026 at 09:15 PDT and, as of the September 27 reporting, has no completion date listed — leaving the rollout window open through approximately 8 October. 5 to 64 hours. The change is global and covers every language.

For practitioners, a multi-week rollout distorts ranking baselines: any traffic dip, recovery, or competitor movement measured against yesterday is unreliable while the update is still cooking. The first action any site owner should take is to bookmark Google's Search Status Dashboard and verify the rollout is still listed as in-progress before drawing conclusions from analytics.

Policy edits and new result labels bundled in

The spam update is accompanied by updates to Google's spam policy, and the same release cycle introduces "For You" and "Preferred Source" labels visible on search surfaces. For SEO practitioners, the label rollout changes what users see in the SERP and creates a new variable in click-through modelling — any before-and-after CTR snapshot taken across September 24 will conflate the policy shift, the new labels and the spam rollout. SEO analysts tracking the label rollout treat it as a separate item to monitor rather than an automatic consequence of the spam update, which is consistent with practitioners who recommend treating each signal independently when triaging post-update traffic changes.

Google Search Console adds an image-search dimension

Within the same reporting window, Google Search Console has begun surfacing image-search data as a separate traffic source. The capability matters because it gives site owners a dedicated view of traffic driven by image results — a category that Google Discover and AI features have increasingly leaned on for visual queries. With the spam update in motion and image-search reporting newly exposed, practitioners running image-heavy sites now have a third unstable input (spam ranking volatility, label-driven SERP changes, and a freshly instrumented traffic source) to monitor simultaneously.

Auditing structured data and image indexability becomes a higher priority this week than usual, since any image-search lift or loss visible in GSC is now directly attributable rather than folded into aggregate Search totals. A quick JSON-LD audit and an HTML weight check are practical first steps. The piece-relative insight on the GSC image change ties this story to the longer audit trail around September 2026 updates.

The macro backdrop: declining Search and Discover referral share

The September 27 SEO Pulse frames the rollout against a steep decline in Google Search referral volume — Google Search fell 40.2% year over year from July 2025 to July 2026, following a 21.9% decline the year prior. Discover's decline widened from 6.6% to 34.3%. The macro number doesn't change what practitioners do this week, but it does change the stakes: with a smaller search pie, a multi-week spam rollout creating ranking volatility is more costly than it would be on a flat baseline. Site owners weighing whether to wait out the spam update before acting on a traffic drop now have to weigh recovery against a sliding aggregate.

What to watch before 8 October

Four checkpoints are concrete and actionable for the next two weeks. First, confirm via Google's Search Status Dashboard that the September 2026 spam update has finished before treating any ranking movement as durable; do this check daily while the rollout is still listed as in-progress. Second, audit image-search traffic in Search Console's new dimension and compare against pre-September 24 baselines to isolate image-specific volatility.

Third, treat any CTR dip captured across September 24 as confounded and avoid rewiring on-page elements until the rollout closes. Fourth, review JSON-LD and image markup now so the freshly instrumented image-search dimension has clean structured data to attribute lifts and losses to. The expected spam update completion window is on or around 8 October, per the rollout targets cited in vendor coverage.