The December 2025 core update is the main story this week.
Google confirmed a new broad ranking update, clarified how often core changes happen, expanded Preferred Sources in Top Stories, and started testing social performance data in Search Console Insights.
Here’s what matters for your work.
Google Releases December 2025 Core Update
Google has released the December 2025 core update, its third core update of the year.
Key Facts
The rollout started on December 11, and Google says it may take up to three weeks to complete. This follows the March and June core updates and comes two days after Google refreshed its core updates documentation to explain smaller, ongoing changes.
Why SEOs Should Pay Attention
If you see big swings in rankings or traffic over the next few weeks, this update is probably the cause.
Core updates are broad changes to how Google evaluates content. Pages can move up or down even if you haven’t changed anything on the site, because Google is reassessing your content against everything else in the index.
The timing matters. Earlier in the week, Google reminded everyone that smaller core updates happen all the time. The December core update sits on top of that layer. You’re dealing with both a visible event and quieter, continuous adjustments running underneath.
Right now, the best move is to watch your data rather than panic. Mark the rollout dates in your reporting. Track when things start to move for your key sections. Compare this behavior with what you saw during the March and June updates. That helps you separate core-update effects from seasonality, technical issues, or campaign changes.
Over the longer term, this is another nudge toward content that shows clear expertise, purpose, and useful detail. The documentation change earlier in the week suggests those improvements can be recognized over time, not only when Google names a new core update.
What SEO Professionals Are Saying
Reactions on X focused on timing, expectations, and the kind of content that might come out ahead.
Some SEO professionals leaned into the holiday angle, joking that Google’s “Christmas update” could either deliver a gift or push sites “off a cliff” right before peak season. Others used the announcement to talk about human-written work, saying they hope this is the update where stronger, human-generated content gets more visibility.
There were also practical reads. A few people tied the update to recent delays in Search Console data, saying the backlog now makes more sense. Others pointed out that this is the third broad update in a year where Google is also investing heavily in AI systems, and that core updates now sit inside a bigger stack of changes rather than defining everything on their own.
Read our full coverage: Google Releases December 2025 Core Update
Google Confirms Smaller Core Updates Happen Continuously
Earlier in the week, Google updated its core updates documentation to spell out that ranking changes can happen…
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