September 2026 Google Spam Update and New GSC Multimodal Search Filter

Google has introduced two important changes for search professionals in September 2026. The first is the September 2026 Google Spam Update, which began rolling out globally on September 24. The second is a new Google Search Console Multimodal Filter that gives website owners more insight into how their content performs when people use images as part of their searches.

Although both developments arrived on the same day, they serve different purposes. The spam update changes Google’s ranking systems, while the new Search Console feature gives SEOs additional performance data.

For marketers and website owners, understanding that distinction is important. A ranking change during the spam update should not automatically be blamed on multimodal search, and the new Search Console data should not be treated as evidence of a ranking penalty.

What Is the September 2026 Google Spam Update?

The September 2026 Spam Update is Google’s latest confirmed spam-related ranking update. Google announced that the rollout began on September 24, 2026, and that it applies globally across all languages.

Google says the rollout may take up to two weeks to complete. That means website owners may see changes in rankings and organic search performance while the rollout is still underway.

Spam updates are designed to improve Google’s automated systems for detecting search spam. Google has not announced that the September update specifically targets one particular spam tactic, so it would be misleading to claim that the update is specifically aimed at AI content, links, or another single practice.

Instead, site owners should use the rollout as an opportunity to review their websites against Google’s existing spam policies.

How Is the September Spam Update Different From a Core Update?

Google releases different types of search updates, and they do not all serve the same purpose.

A spam update focuses on Google’s systems for identifying and handling search spam. A core update, by comparison, represents a broader change to Google’s ranking systems.

This distinction matters when analyzing Google ranking changes.

If a website experiences a ranking change during the September rollout, timing alone does not prove that the site received a spam-related demotion. Search results can change for many reasons, including normal competition, changes in search behavior, technical issues, content changes, and other Google systems.

The safest approach is to look at the evidence in your own Search Console and analytics data before making major SEO decisions.

What Should You Monitor During the September 2026 Spam Update?

The rollout provides a good reason to monitor your website more closely, but there is no need to panic every time a ranking chart moves.

Start by comparing your current performance with a representative period before the update began. Look at impressions, clicks, average position, landing pages, and organic sessions.

Pay particular attention to pages showing a sustained decline rather than reacting to one or two days of volatility.

Review Your Search Console Data

Google Search Console can help you identify whether the change is concentrated around particular pages, search queries, countries, or devices.

For example, an organic traffic drop across your entire website tells a different story from a decline affecting only one service page.

Also check whether your impressions have fallen alongside clicks. If impressions remain relatively stable while clicks change, the explanation may involve changes in search-result presentation or click behavior rather than a broad loss of visibility.

Review Google’s Spam Policies

If a site experiences a significant change during a spam update, review the relevant Google spam policies before making sweeping changes.

Look for practices that could create spam-policy violations, including manipulative techniques intended primarily to influence rankings rather than help users.

The goal should not be to make a website look different simply because an update is running. It should be to identify and fix genuine quality or compliance problems.

Google Spam Updates in 2026

The September rollout is part of a broader sequence of Google spam updates 2026.

Google’s Search Status Dashboard records spam updates in March, June, August, and September. The September update is therefore the fourth confirmed spam update of the year.

The earlier updates provide useful context, but their rollout durations should not be treated as a prediction for September. Google has specifically said that the September rollout may take up to two weeks.

For SEO teams, this history reinforces an important point: ranking volatility around a confirmed update should be evaluated in the context of the specific rollout rather than assumed to follow an identical pattern every time.

What Is the New Google Search Console Multimodal Filter?

The other major September development is the introduction of web multimodal search performance reporting in Google Search Console.

Google says the new reporting provides data about searches where users use images as part of their search interaction. The feature is available through a new multimodal search type filter in Search Console’s Performance reports.

This is particularly interesting for SEO because search is no longer limited to someone typing a phrase into a search box.

People can use a camera, upload an image, select something they see on their screen, or use other visual interactions to discover information.

The new Multimodal Search Console data gives website owners another way to understand that behavior.

What Does Web Multimodal Search Include?

Google says its new reporting includes several visual search experiences.

These include Google Lens, Circle to Search on Android, image uploads to Google Search, and Chrome’s right-click “Search this image” feature.

In practical terms, these experiences allow users to start a search with an image or visual object instead of relying entirely on a traditional text query.

That makes the concept of Google multimodal search important for modern SEO reporting.

The new data does not mean that traditional keyword research has suddenly become irrelevant. Text searches remain important. Instead, SEOs now have another source of information about how users discover websites.

How Does the GSC Multimodal Filter Work?

The GSC Multimodal Filter is available through Search Console’s Performance reporting.

When eligible data is available for a site, website owners can select the multimodal search type and examine performance associated with these searches.

Google says the data is also available in the Performance report for Generative AI features.

This creates an interesting opportunity for SEO teams. Instead of looking only at traditional web search performance, you can begin asking questions such as:

• Which pages receive visibility from multimodal searches?
• Are important visual assets helping users discover those pages?
• How much visibility comes from image-based search experiences?
• How does multimodal performance compare with traditional web search?

The feature is rolling out globally, although the metrics will appear only for sites receiving traffic from these types of searches.

Why Multimodal Search Matters for SEO

The rise of visual search changes how marketers should think about images.

For years, image search SEO often focused on basics such as descriptive filenames, useful alt text, image relevance, and appropriate page context. Those fundamentals remain valuable.

However, multimodal search adds another layer.

A person might photograph a product, use Circle to Search to identify something on a screen, or upload an image to Google Search. The search journey can therefore begin with something visual and lead to a webpage.

That makes the relationship between an image and the surrounding page content increasingly important.

Think Beyond Image Optimization

Good multimodal SEO does not mean stuffing keywords into image filenames or alt attributes.

Instead, make sure your images genuinely support the page.

Use original and useful visuals where appropriate. Give images descriptive alternative text when accessibility requires it. Keep important visual information close to relevant page content, and make sure the page itself provides useful information about what the image represents.

The objective is simple: help users and search systems understand the relationship between the visual asset and the page.

Is the Multimodal Search Filter Part of the Spam Update?

No. These are separate developments.

The September 2026 Spam Update is a ranking-system update related to Google’s automated spam detection.

The Multimodal Search Filter is a Search Console reporting feature that helps site owners analyze performance from visual and image-assisted searches.

They happened at approximately the same time, which makes it easy to connect them, but there is no official indication that the multimodal reporting feature is part of the spam update.

Keeping these concepts separate will also make your SEO reporting more accurate.

What Should SEO Professionals Do Now?

The best response to these September changes is measurement, not guesswork.

First, monitor your website while the Google September 2026 Spam Update continues rolling out. Look for sustained changes rather than reacting to individual ranking movements.

Second, review your website against Google’s spam policies if you experience significant changes.

Third, explore the new multimodal reporting when data becomes available. Look for pages that receive visibility from visual search and consider whether their images and surrounding content adequately answer the user’s needs.

Finally, avoid making drastic changes simply because rankings fluctuate during an active rollout.

A Practical SEO Checklist

What Does the September 2026 Update Mean for SEO?

The biggest takeaway is that Google Search continues to evolve on two fronts.

On one side, Google’s automated systems continue to improve how they detect search spam. On the other, users are gaining more visual ways to search, and Google is giving site owners additional data to understand that behavior.

The September 2026 Google Spam Update therefore deserves careful monitoring, but it should not encourage rushed SEO changes.

At the same time, the new Web Multimodal reporting gives SEO professionals another useful source of performance data. Google Lens, Circle to Search, image uploads, and other visual experiences show why SEO increasingly involves more than traditional text queries.

For businesses, the practical approach is straightforward: follow Google’s guidelines, create genuinely useful content, maintain a technically sound website, and use the data available in Search Console to understand how people actually find your content.

Conclusion

The September 2026 search landscape brings two developments that SEO professionals should understand: a new global spam update and new reporting for multimodal search.

The spam update is a reason to monitor website performance and review Google’s guidelines. The new Search Console reporting is an opportunity to understand how visual search contributes to website discovery.

Neither requires a knee-jerk SEO overhaul.

Instead, use reliable data, focus on people-first content, maintain strong technical foundations, and pay attention to how search behavior is changing. As Google expands beyond traditional text queries, understanding both Google ranking changes and visual discovery will become increasingly useful for modern SEO.