## Cross-domain iFrame Automation [Same-origin policy](https://en.wikipedia.org/wiki/Same-origin_policy) prevents Appium from automating iFrames that have a different domain to the parent. ### Subdomain workaround If the parent and the iFrame share the same domain (e.g. `site.com` and `shop.site.com`), you can set `document.domain` on both the parent and each iFrame to a common domain. This solves the same-origin policy issue and allows automation. For example: Parent: ``` ``` Child iFrame: ```

This is an iFrame!

```