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Feb 25, 2025
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chore: add firefox webdriver bidi docs #6103

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chore: add firefox webdriver bidi docs
AtofStryker Feb 14, 2025
429f36f
address code review comments
AtofStryker Feb 14, 2025
8b6c661
update firefox warning message and correct majorVersion type
AtofStryker Feb 24, 2025
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14 changes: 14 additions & 0 deletions docs/app/references/launching-browsers.mdx
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Expand Up @@ -190,6 +190,20 @@ of our [docker images](/app/continuous-integration/overview#Cypress-Docker-Image
By default, we will launch Firefox headlessly during `cypress run`. To run
Firefox headed, you can pass the `--headed` argument to `cypress run`.

##### Webdriver BiDi and CDP Deprecation

:::info

Since Firefox 129, Chrome DevTools Protocol (CDP) has been [deprecated in Firefox](https://fxdx.dev/deprecating-cdp-support-in-firefox-embracing-the-future-with-webdriver-bidi/). Cypress will default to automating the Firefox browser with WebDriver BiDi in Firefox 135. Cypress will no longer support CDP within Firefox in the future. Cypress CDP support within Firefox is planned to be removed in Cypress 15.

If CDP still needs to be used, you can force enablement via the `FORCE_FIREFOX_CDP=1` environment variable, regardless of Firefox version. For example:

```bash
FORCE_FIREFOX_CDP=1 npx cypress run --browser firefox
```

:::

### WebKit (Experimental)

Cypress has [experimental](/app/references/experiments) support for WebKit,
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