Which bots support JavaScript?

A simple test-page that checks whether your user agent fetches and executes JavaScript and CSS, and whether it presents a valid Web Bot Auth signature. If you want to test Web Bot Auth on static sites, check out the JavaScript WBA-detection snippet from VoightKampff.dev

Run the test →

How it works

  1. Your browser (or bot) loads the test page.
  2. The page serves unique CSS and JavaScript assets per session.
  3. Fetching and execution of each asset is independently recorded.
  4. If a "Web Bot Auth" signature is present, it is cryptographically verified.
  5. Results are aggregated and published on the reports page.

Last 91 days

Total sessions:

Fetched JS
Executed JS
Fetched CSS
Presented Web Bot Auth signature
Valid Web Bot Auth signature
Web Bot Auth is a draft IETF standard letting bots cryptographically prove their identity.

Updated 2026-07-19 06:00 UTC · Full breakdown by user agent →

Data collection & privacy