> For the complete documentation index, see [llms.txt](https://swtchd-io.gitbook.io/swtchd.io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swtchd-io.gitbook.io/swtchd.io-docs/testing-and-tracking/how-tracking-works.md).

# How tracking works

### Step-by-step tracking flow

1. Create a test with multiple **page versions** (Version A, Version B, etc.).
2. Choose what you want to track:
   * **Link tracking**: clicks on specific buttons.
   * **Form submit tracking**: submits via a hosted thank-you redirect.
   * Or **both**.
3. swtchd generates tracking links like `https://t.swtchd.io/abc123`.
4. Paste those links into the buttons on each version of your page.

### Guarantees

* **Tracking links keep redirecting forever.** Your buttons won’t break.
* swtchd only counts tracking events **while your test is live**.
* Visits and clicks use anonymized visitor IDs. No personal visitor data is stored.


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