How to know if a Google algorithm change has affected you?

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How can I tell if Google has changed its algorithm?
Surprise! In some cases Google officially announces these changes, but this is not always the case.

To stay up to date with official announcements, you should follow these two official Google Twitter accounts: Google SearchLiaison and Google Search Central . When the time comes, you will see announcements similar to this one:


But as I was saying, Google doesn't always announce or make official statements. In this case, there are several ways to stay up to date.

Specialized media: some of them, such as Moz or SEJ , have a history of the hospital contact email database most relevant milestones that have occurred in this field.
SEO Community: There are many specialists who share a lot of knowledge and news on Twitter or their blogs. It is vital to follow them to stay up to date. Here is a list of Twitter users that I follow. Likewise, the tools also store content about these changes. For example, Sistrix also has content with a history in this area.
I notice strange things but I'm not sure
If you see things that don't add up and there isn't any content about them yet, there are several tools that have an index to measure stability on Google. For example, Sistrix has the Google Update Radar where you can segment by country and see if things are moving or not:

google update radar sistrix
Along the same lines, there are also the Moz and Semrush indexes .

Improve your SEO!
If you see high activity on these tools, it's likely that the algorithm or SERPs are adjusting and it may be affecting your performance.

Okay, it's affecting me. Now what do I do?
Before you do anything, the first thing you should do is consult an expert SEO. Although it may seem simple, it is not. To find out if a change or adjustment by Google has affected you and why, either you have a lot of experience or you are probably drawing biased and hasty conclusions. For this reason, if in doubt, consult us without obligation .

Second, you need data, and you must allow a minimum amount of time to pass in order to be able to study the case properly. Once a reasonable amount of time has passed, you can activate all the pins in your Sistrix account so that it shows you all the algorithm changes/adjustments that the tool has recorded:

More pins sistrix
And thus superimpose your organic visibility index with these pins. This way you can see if you have any decrease or increase:

sistrix visibility index
As I said, this is just an indicator. The fact that a pin of a Google algorithm change coincides with an increase or decrease does not necessarily mean that you have been affected, although it is likely.

From here, roughly speaking, it is time to look for information about this change to try to understand what it is intended to do. It would also be great to talk to other professionals in the sector to get other points of view and learn about more affected cases.

In this case, it is also very interesting to know which keywords and pages have been affected. Remember that for this, you have a section in Sistrix where you can compare one period against another and thus see what has been impacted: