The Webdriver specification defines a `navigator.webdriver` property to indicate if UA is controlled by automation. This property is defined and returns `true` when running Chrome with the `--headless` flag.

Documentation

Specification

Working draft or equivalent

Status in Chromium

Internals>Headless


Enabled by default (tracking bug) in:

  • Chrome for desktop release 63

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No signal
  • No signal
  • No signal
  • No signals

Owner

Search tags

headless,

Last updated on 2020-11-09