/headless-chrome-detect

Primary LanguageHTML

Headless chrome detection sample

Files

  1. index.html main file with JS methods to detect headless chrome
  2. check.py python script to test detection

Installation

  1. Clone repo

  2. Install deps (selenium):

pip install selenium

  1. Run script:

python check.py

Sample output:

Default headless result: headless, score=0.8333333333333334
testUserAgent       : 1
testAppVersion      : 1
testWebdriver       : 1
testOuterWidth      : 1
testChrome          : 1
testImage           : 0

Fake UA headless result: headless, score=0.5
testUserAgent       : 0
testAppVersion      : 0
testWebdriver       : 1
testOuterWidth      : 1
testChrome          : 1
testImage           : 0

Fake UA headless + JS fixup result: generic, score=0
testUserAgent       : 0
testAppVersion      : 0
testWebdriver       : 0
testOuterWidth      : 0
testChrome          : 0
testImage           : 0

Used methods

  1. User Agent / App Version substring detection
  2. Webdriver / chrome flags detection
  3. Outer width == 0 detection
  4. Broken image zero size detection (looks like it does not work anymore)

Used fixes to hide headless chrome

  1. None
  2. Fake User Agent
  3. Fake User Agent + JS fixes to override chrome/webdriver tags, outerwidth

Concl.

Some advanced methods are required for efficient headless browser detection