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Traffic dropped or spiked: how to find out why

Updated October 19, 2026

A sudden change in the chart gets everyone's attention. Most of the time the explanation is found in ten minutes by splitting the change until one row accounts for it.

1. Rule out the measurement

Before looking for a cause outside, make sure the numbers are real.

  • Is the script still on every page? A theme update, a new template or a caching plugin can drop it. A drop that starts at a precise hour and affects every source equally usually means this. Statsdot emails you when a site that was recording gets no visits for 24 hours.
  • Did the site move? A new domain, a www change or a new subdomain sends visits to a site that is not registered.
  • Did a bot visit? A spike with one page, one country and a near-100 % bounce rate is often automated traffic that got through.
  • Did you change the time zone or the period? Compare whole days with whole days. Statsdot counts in UTC days.

2. Find the channel

Open the Channels tab and compare with the previous period. One channel usually explains most of the change:

  • Organic search down: an update to Google's ranking, pages that fell out of the index, or a seasonal dip. Search Console shows which searches lost clicks.
  • Direct up: a newsletter or a message shared in an app without tags, or a mention on the radio, in print or in a talk.
  • Referral up: someone linked to you. The Sources tab shows the site.
  • Social or AI assistants: one post or one answer that spread.

3. Find the page

Filter by the channel that moved and look at Top pages and Entry pages. A spike on one page points to one link; a drop across all pages of a section points to the section (a template change, a robots rule, a redirect).

4. Find the audience

Countries and devices finish the picture. A drop limited to mobile can be a broken mobile layout or a slow page; a spike from one country often comes from a local mention.

5. Write it down

Once you know, add a note on the chart for that day ("Newsletter sent", "Google update", "Mentioned on X"). Next month, nobody has to investigate the same bump twice. See Notes, main goal and alerts.

Statsdot also emails you when yesterday's visitors doubled or halved against the week before, so the investigation can start the morning after rather than at the end of the month.