What Google’s Core Update Actually Changed (And What Didn’t)
Every time Google runs a core update, the same panic follows. Rankings move, forums fill up, and everyone starts second-guessing their content. Some of that reaction is justified. Most of it isn't. The honest truth is that core updates rarely change what Google is looking for. They change how well Google can find it. This post walks through what actually shifted, what people think changed but didn't, and the one or two things genuinely worth paying attention to.
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Start Here: What a Core Update Actually Is
A core update is not a penalty. Google is not targeting your site specifically. What’s happening is a recalibration of how Google weighs the signals it already uses. Think of it less as a rule change and more as a scoring adjustment. Sites that drop after a core update haven’t suddenly broken any rules. They’ve been reassessed against a sharper version of the same criteria.
Google runs these updates several times a year. The time it takes to recover after a core update is often longer than people expect, because the fix isn’t technical. It’s about the quality of what’s on the page.
What This Round Actually Changed
The signal that’s been weighted more heavily recently is what Google calls ‘information gain’. That’s a rough way of saying, does your page say something that isn’t already said, identically, on a hundred other pages? Thin content that restates the obvious has always been weak. Now it’s weaker still.
There’s also been a measurable shift in how Google handles pages that exist mainly to rank rather than to inform. Pages built around a keyword with no real depth behind them are losing ground to pages that actually answer the question. Not just mention it.
AI-generated content is part of this picture. Google has been fairly clear that it doesn’t object to AI-written content in principle. What it objects to is content that’s hollow, whatever the source. If you’re using AI to produce something genuinely useful, that’s fine. If you’re using it to fill a page, that’s the problem. Our article on AI content and Google penalties goes into that in more detail.
What Didn’t Change
Backlinks still matter. Page speed still matters. Technical health still matters. None of that moved. People who lost rankings and decided their link profile was suddenly the problem are probably wrong. Core updates don’t target links. They target relevance and quality.
E-E-A-T didn’t change either, it just got harder to fake. Experience, expertise, authoritativeness, and trustworthiness have been in Google’s Quality Rater Guidelines since well before this update. What’s shifted is Google’s ability to distinguish between a page that demonstrates real knowledge and one that performs it. That’s a meaningful difference.
The Sites That Dropped and Why
Most of the sites that took a visible hit share a few common traits. Content that’s broad rather than specific. Pages that cover a topic in 400 words when the question genuinely needs 900. A site structure where almost every page targets a keyword but none of them actually resolves the reader’s query.
There’s also a category of sites that built authority a few years ago on the back of volume. Lots of posts, published fast, covering every related keyword. That model is getting harder to sustain. Google is increasingly good at telling the difference between a site where someone clearly knows their subject and a site that’s just covering ground.
The One Thing Worth Doing Right Now
Pull up your top ten pages in Google Search Console and ask yourself honestly whether each one fully answers the question a person would have when they land on it. Not whether it mentions the keyword. Whether it actually helps.
If the answer is no, that’s the work. Rewrite the page so it does. Add the specific detail that’s missing. Cut the padding that’s there for length rather than value. This is slow, unglamorous work. It takes more time than adjusting a meta title. But it’s what actually moves things after a core update, because it addresses the right problem.
What’s Not Worth Worrying About
Chasing the exact date of a future update is a waste of time. Google doesn’t publish a schedule, and even when it confirms an update has rolled out, it rarely tells you what the specific changes were. The sites that hold their ground through core updates tend to be the ones that weren’t optimising for the update in the first place. They were just doing the basics properly.
Page speed is worth keeping in good shape regardless, not because it’s a core update factor specifically, but because a slow site compounds every other problem. If your Core Web Vitals are already weak, fixing those is a reasonable background priority. The practical fixes for Core Web Vitals are well-documented and most don’t require a rebuild.
The sites that struggle after core updates are nearly always the ones that were already on shaky ground. Fix the content. The rest tends to follow.