Launch options

channel

Release channel of the browser build.

Use it for: QA teams checking a site against the next browser release before users get it (beta, dev), and scrapers that want to see a change coming.

Browsers: Google Chrome, Microsoft Edge, Brave, Opera, Naver Whale, Yandex Browser.

Details

• Type: "stable" | "beta" | "dev" | "developer"
• Default: stable
• Example: {"channel":"beta"}

Omit it (or send "stable") for the stable build, or pick a pre-release channel. The browser's page lists each channel's current version; a channel the browser doesn't have returns 400 invalid_channel with its channels in message. Servers update on their own schedule, so the exact stable version can differ by one release between sessions.

Opera calls its dev channel developer. browser.version() reports the underlying Chromium version; for Brave, Opera, Whale and Yandex that differs from the product version listed here.

Used in

• Case 3: Stable, beta, dev and an older major: four Chromes side by side
• Google Chrome, beta channel
• Microsoft Edge, beta channel
• Opera, developer channel

All options: launch options.