Every few months, Google rolls out what it calls a Core Update. Some updates roll out quietly with little impact, while others send shockwaves through search results, with websites gaining or losing significant visibility overnight.
For business owners and marketing teams who rely on organic traffic, these updates can feel unpredictable, and it can be hard to know whether you should sit tight, panic, or get to work.
With major Core Updates over the last six months and the release of the May 2026 Core Update, I’ve created this guide alongside our experienced SEO specialists to remove the guesswork around these updates.
We’ve broken down exactly what Core updates are, how they affect your rankings, the best practices to keep your site safe over the long term, the metrics to watch during a rollout, and a phased approach for recovery if your site has been impacted.
We’ll also keep this article updated with the latest Google Core Update so you always have a current reference point.
TL;DR: Google Core updates are broad changes to how Google evaluates content quality across the web. They’re not penalties, and ranking drops usually mean other pages are doing a better job of matching user intent. The best long-term protection is helpful, people-first content backed by clear expertise, sound technical foundations, and a tidy site structure.
If you’ve been hit, don’t panic. Wait for the rollout to finish, diagnose what’s changed, then work through a phased recovery: diagnose in month one, rebuild in months two and three, reassess from month three onwards. The latest Core update is the May 2026 Core Update, which began rolling out on 21st May.
What is a Google Core Update?
A Core Update is a significant, broad change to Google’s search algorithms and ranking systems. These updates recalibrate how Google evaluates content quality across the entire web, rather than targeting specific sites or pages.
Google have a great analogy for explaining Core Updates. Imagine you wrote a list of your 20 favourite restaurants in 2019. Now, in 2026, new restaurants have opened, others have improved, and your own preferences have evolved. If a friend asked for recommendations today, your list would look different, not because the older restaurants are suddenly bad, but because the overall picture has changed.
Core updates work in much the same way. Google reassesses their entire search index and adjusts which pages it considers most helpful, relevant, and trustworthy for each query.
Crucially, Core updates aren’t penalties. If your rankings drop, it doesn’t necessarily mean your site has done anything wrong. It usually means Google has decided that other pages are doing a better job of meeting user intent for the queries you were ranking for.
How Core Updates affect search
Core updates are typically rolled out over a one to three-week period, and during that window, you can expect significant volatility across search results. Rankings can fluctuate daily as Google’s systems work through the change, and the picture won’t fully settle until the rollout completes (and often for a week or two afterwards).
Here’s a look at ranking volatility after the release of the May 2026 Core Update from the Semrush Sensor tool, which was surprisingly low apart from a brief spike in the days leading up to the rollout.
For most Core Updates, the impact is global, affecting all regions, languages, and content types. Core updates also influence more than just standard organic rankings; they can affect Google Discover, featured snippets, AI Overviews, and other search features.
Some industries tend to feel Core updates more sharply than others. YMYL (Your Money or Your Life) topics like health, finance, and legal content are usually the most volatile because Google holds these to a higher standard of expertise and trustworthiness. eCommerce, affiliate sites, and content-heavy publishers also tend to see significant shifts.
Core Updates vs Spam Updates
It’s worth clarifying a common point of confusion: Core updates and spam updates are not the same thing.
Core updates are broad changes to how Google evaluates content quality and relevance across the board. They don’t penalise individual websites or target specific SEO practices.
Spam updates, on the other hand, specifically focus on identifying and demoting pages that breach Google’s spam policies, things like cloaking, scaled content abuse, link spam, and site reputation abuse. These can lead to penalties for the websites involved.
In short, if your site has dropped after a Core update, it’s about quality and relevance. If it’s dropped after a Spam update, it’s likely about a policy you’ve breached.
Best practices to keep your site safe
There’s no magic checklist that makes a website immune to Core updates, but there are clear principles that consistently protect sites over the long term. These are the areas Damteq focuses on for clients, and they align directly with what Google prioritises.
1. Create helpful, people-first content
This is the single most important principle and the thread that runs through every piece of Google’s guidance. Content should be written for users, not search engines.
Ask yourself: Does this page genuinely answer the searcher’s question? Does it provide original information, insight, or analysis? Does it leave the reader feeling like they’ve got what they came for?
Thin, repetitive, or AI-generated content with no human input is exactly what Google has been working to push down over the past few years, and Core updates accelerate that.
2. Demonstrate E-E-A-T
E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness, and it’s one of the most important quality frameworks Google uses, especially for YMYL topics.
Recent core updates, including the December 2025 Core Update, have also extended E-E-A-T expectations to product reviews, tutorials, and general informational content.
In practice, demonstrating E-E-A-T means:
- Building a clear, trustworthy brand around your site
- Showing that content is written or reviewed by people with genuine knowledge of the topic
- Including author bios, credentials, and clear attribution
- Linking to trustworthy sources and citing data where appropriate
- Sharing first-hand experience, not just rehashed information from other sites
3. Match search intent
Google has become much better at understanding why someone is searching, not just what they’re typing. If a page targets a keyword but doesn’t fully address what the searcher actually wants, it will struggle.
Look at the top-ranking results for your key queries. Are they informational, commercial, or transactional? Does your page match that intent? Pages that try to satisfy too many intents at once (a common issue with long-form guides that tack on a product pitch at the end) often lose out during Core updates.
4. Get the technical foundations right
Content quality is the priority, but technical performance still matters.
Core Web Vitals feed into Google’s page experience signals, and slow, clunky, or poorly built sites struggle to compete even when the content is strong. There are three numbers worth knowing:
- Largest Contentful Paint (LCP): how quickly the main content loads. Aim for under 2.5 seconds.
- Cumulative Layout Shift (CLS): how stable the page is as it loads. Aim for a score below 0.1.
- Interaction to Next Paint (INP): how quickly the page responds when a user interacts with it. Aim for under 200 milliseconds.
You can check these in Google’s PageSpeed Insights tool or in the Core Web Vitals report in Search Console.
Alongside those, make sure your site is:
- Secure (HTTPS) and free of crawl errors
- Mobile-friendly with a responsive design
- Free of intrusive ads and pop-ups
- Properly structured with clean URLs, logical internal linking, and clear navigation
5. Maintain a clean, coherent site structure
Google increasingly evaluates websites as a whole rather than just individual URLs. Large sections of thin or low-value content can drag down stronger pages elsewhere on your site.
That’s why you should audit your site regularly. Where multiple pages cover overlapping topics, consider merging them into a single, stronger resource. Just remember to add 301 redirects from the old URLs to prevent 404s and retain any backlink authority, and update internal links to point to the new page.
Strong internal linking also matters in its own right; it helps Google understand which pages on your site you consider most important, and it helps users navigate naturally between related topics.
If you’re tempted to delete entire sections of your site, that’s usually a sign that those sections were built for search engines rather than users in the first place. Deletion should be a last resort, reserved for content that genuinely can’t be improved or consolidated.
Metrics to watch during and after a rollout
When a Core update is rolling out, it’s tempting to refresh Search Console every hour. Resist that urge. Daily fluctuations during a rollout aren’t reliable signals, and acting on them can lead to changes you’ll regret once the dust settles. Instead, focus on the right metrics at the right time.
During the rollout
Keep an eye on ranking volatility, but don’t draw conclusions yet:
- Top-performing pages and queries are worth noting if they move significantly, so you can investigate them properly once the rollout completes.
- Volatility trackers like Semrush Sensor or MozCast give you a sense of how turbulent the update is across search as a whole.
- High-level Search Console data (impressions and clicks) can flag major movements, but don’t act on early data, as it may not be definitive.
Once the rollout is complete
Google recommends waiting at least one full week after a Core update finishes rolling out before drawing conclusions. After that, here’s the workflow we recommend:
- Look beyond rankings. Click-through rate, impressions, engagement, conversions, and enquiries all matter. A small position drop with steady conversions is very different from a small drop that also tanks your leads.
- Confirm the rollout has finished using the Google Search Status Dashboard, and note the start and end dates.
- Compare the right dates in Search Console. Set the date range to the week after the rollout settled, and compare it against an equivalent week before the update began. This gives you a clean before-and-after view.
- Review your top pages and queries. A small drop (say, from position two to four) usually doesn’t warrant drastic action. A large drop (from page one to page three or beyond) signals a deeper assessment is needed.
- Analyse different search types separately. Web, Images, Video, and News all behave differently, and a drop in one doesn’t always reflect what’s happening in the others. Looking at them in isolation helps you pinpoint where the change actually happened, so you can focus your response in the right place.
- Check what’s changed in the SERP itself. Sometimes a ranking drop isn’t about your page at all. It’s about the search results page filling up with AI Overviews, video carousels, “People Also Ask” boxes, or other features that push organic results further down. Run a few of your important queries manually and see how the search results look now compared to before.
How to react if you’ve been impacted
If you’ve confirmed a sustained drop in performance after a Core Update has finished rolling out, it helps to think about recovery in phases rather than as one big checklist.
Different things matter at different points in the process, and trying to do everything at once is one of the fastest ways to make poor decisions. Here’s how we break it down with our SEO clients at Damteq.
Phase 1: Diagnose (Month 1)
The first month is about understanding what’s actually happened, not rushing in to fix it. Resist the urge to start changing things straight away, as you need a clear picture first.
- Conduct an honest content audit. Use Google’s self-assessment questions to evaluate your most-affected pages, and ideally your site as a whole. Ask whether your content offers genuine expertise, demonstrates first-hand experience where relevant, addresses the searcher’s intent fully, and provides value beyond what other pages on the topic already offer.
- Don’t panic, and don’t make sweeping changes immediately. Reactive changes, especially ones based on speculation about what an update “targeted,” often do more harm than good.
- Identify which pages and queries were most affected. Group them by topic, intent, and content type. Patterns often emerge that point you to the underlying issue. It might be one topic cluster, one type of page (product pages, blog content, category pages), or one search intent that’s been hit hardest.
- Compare yourself with the winners. Run your most important queries manually and look at the pages that have moved up. What are they doing that your pages aren’t? Better depth, clearer expertise, faster load times, and a more direct answer to the question? This is one of the most useful diagnostic exercises available, and it’s free.
Phase 2: Rebuild (Months 2 & 3)
Once you’ve diagnosed the problem, this is where the real work happens. The goal here is to genuinely improve your site, not to apply quick fixes.
- Look at the bigger picture. Core updates increasingly assess your site as a whole, not just individual URLs. If large sections of your site exist solely to capture search traffic with thin, low-value content, they may be dragging down stronger pages as well.
- Upgrade your content, don’t just update it. Changing a publish date and tweaking a few sentences isn’t the same as making a page better. If a page has dropped, the question to ask is whether someone reading it today would genuinely get more value than they’d get from the pages now outranking you. If the answer is no, the page needs proper work: more depth, clearer expertise, better examples, and original insight, not just a refresh.
- Strengthen experience and expertise signals on key pages. Add author bios, credentials, and clear attribution where relevant. Cite reputable sources. Bring first-hand experience into the content where you can.
- Consolidate and tidy. Merge overlapping pages into stronger, more focused resources using 301 redirects, and tighten internal linking so your most important pages get the visibility they deserve.
- Address the technical foundations. Use this phase to fix Core Web Vitals issues, crawl errors, mobile usability problems, and anything else that might be undermining the content improvements you’re making.
Phase 3: Reassess (Month 3 Onwards)
Recovery from a Core update isn’t usually quick. Some changes start showing up within days, but most meaningful recovery happens at the next Core update or later, as Google reassesses your site under its updated systems.
- Avoid deleting content as a first instinct. Removing pages should be a last resort, reserved for content that genuinely can’t be improved or consolidated.
- Monitor performance steadily. Track impressions, clicks, average position, and conversions month-on-month, not day-on-day. You’re looking for trends, not individual data points.
- Keep iterating. Recovery isn’t a one-off project. Continue improving the pages you’ve touched, expand into gaps you’ve identified, and keep publishing new content that adds genuine value.
- Be patient. Google has been clear that the biggest shifts tend to happen between major updates, not within them. If you’ve done the work, the next Core update is often where you’ll see it reflected.
The latest Google Core Update (May 2026 Core Update)
On Thursday 21st May, Google announced the rollout of the May 2026 Core Update, the second broad Core update of the year. The rollout is expected to take up to two weeks to complete, placing the likely completion window around early June.
This update follows the March 2026 Core Update, which finished rolling out on 8th April, making for an unusually short gap of roughly six weeks between updates. The May 2026 Core Update has also arrived just days after Google I/O 2026, where Google announced major Search and AI-related changes, including significant updates to AI Mode and AI Overviews.
Many SEO specialists had already noticed unusual ranking volatility in the days leading up to the formal announcement, with tools like Semrush Sensor showing elevated turbulence across multiple industries.
As with most Core updates, Google hasn’t really shared the specifics. Their official line is that this is a regular update designed to better surface relevant, satisfying content for searchers from all types of sites. In other words: no new ranking systems, no new guidance, just a recalibration of the existing systems Google uses to evaluate quality.
If your site sees movement over the next couple of weeks, hold off on making changes until the rollout completes. Google specifically recommends waiting at least a week after completion before reviewing your Search Console data, comparing the week after the update settles against a week before 21st May.
Need help recovering or future-proofing your site?
Core updates can be unsettling, but they’re also opportunities.
Every update is Google reaffirming that helpful, reliable, people-first content is what wins in the long term, and that sites that consistently invest in quality tend to come out stronger over time.
If your website has been impacted by any of the recent Core Updates, our SEO Specialists can help by auditing your content, assessing relevance, quality, and search intent, and making sure you’re aligned with Google’s search engine guidelines, so you can recover and build a foundation that holds up against future updates too.
To speak with one of our SEO Specialists, get in touch today.
