# Traffic drop

Category: [Relaunch & Migration](https://seo-geo-glossary.com/en/glossary/category/relaunch-migration/) › [Go-live & after](https://seo-geo-glossary.com/en/glossary/category/relaunch-migration/go-live-after/) · Also known as: Traffic-Einbruch analysieren

A **traffic drop** is a marked decline in visits to a website. In SEO the term usually refers to organic traffic from search. Comparing the timing, the affected pages and the traffic sources narrows down the cause.

## What are the possible causes?
Google's guide to debugging drops in Search traffic names these categories:

- algorithmic updates, including core updates
- technical issues that affect crawling, indexing or serving, such as server availability, robots.txt fetching or "page not found"
- security issues such as malware or phishing
- spam policy violations, with or without a manual action
- seasonality and changing user interest
- site moves and migrations that change URLs

Google also suggests checking the Search Console Data Anomalies page, because a drop can come from a change in data processing or a logging error.

## How does the analysis start?
In the Search Console Performance report, Google recommends selecting 16 months, so that a yearly pattern is visible. Then compare the drop period with the previous period or the same period a year earlier, and look at queries, URLs, countries, devices and search types separately. Google Trends shows whether interest in a topic fell across the web.

If impressions stay the same and clicks fall, Google points to the page title and snippet, or to more appealing rich results from other sites. A misplaced `noindex` depends on Google crawling the page again, so traffic falls more slowly than after a site-wide outage.

## Example (fictional)
Clicks on category pages fall from a Monday on. Crawl stats show more 5xx responses since the same day, and a release ran on the weekend. The deployment is the likely cause.

*Diagram: Normal range, outlier, false alarm.* Made-up example data. A metric mostly moves within its expected range. A public holiday falls outside the band and triggers a false alarm, while a sustained drop triggers a justified alert. Example based on practice, not a standard method.

## Related terms

- [Organic traffic](https://seo-geo-glossary.com/en/glossary/organic-traffic/index.md)
- [Ranking drop](https://seo-geo-glossary.com/en/glossary/ranking-drop/index.md)
- [Traffic sources](https://seo-geo-glossary.com/en/glossary/traffic-sources/index.md)
- [Google Search Console](https://seo-geo-glossary.com/en/glossary/google-search-console/index.md)
- [Google core update](https://seo-geo-glossary.com/en/glossary/google-core-update/index.md)
- [Deployment](https://seo-geo-glossary.com/en/glossary/deployment/index.md)

## Sources

- [Debugging drops in Google Search traffic – Google Search Central](https://developers.google.com/search/docs/monitor-debug/debugging-search-traffic-drops)
- [Site moves and migrations – Google Search Central](https://developers.google.com/search/docs/crawling-indexing/site-move-with-url-changes)
- [Diagnosing Traffic Drops During a Crisis – Moz (secondary, 2020)](https://moz.com/blog/diagnosing-traffic-drops-during-a-crisis)

---

Last updated: October 8, 2026
URL: https://seo-geo-glossary.com/en/glossary/traffic-drop/