Botd

About Botd

BotD is an open source JavaScript library that detects basic bots in web applications by identifying browser automation tools and frameworks. It runs entirely on the client side in the browser, requires no server component, and is released under the MIT license, making it free for developers and commercial use. It can be installed via NPM (`@fingerprintjs/botd`) or loaded via CDN, and is initialized once per page to run detection checks on demand.

The library detects headless browsers (Chrome, Firefox) and automation tools and frameworks including Selenium, Playwright, PhantomJS, Nightmare, Electron, and SlimerJS. It does not detect certain stealth plugins designed to evade automation detection, such as puppeteer-extra-plugin-stealth, browserless, undetected-chromedriver, or pyppeteer_stealth.

The project is maintained with a stability-only roadmap, focused on critical fixes and regressions rather than new features. For applications requiring detection of more sophisticated bots, stealth plugins, anti-detect browsers, AI agents and assistants, or search engine crawlers, the maintainers offer a separate commercial product, Fingerprint Bot Detection API, which processes data server-side and includes browser and server-side SDKs.

Key features

• Detects browser automation tools and frameworks like Selenium, Playwright, PhantomJS, Nightmare, Electron, and SlimerJS
• Runs entirely client-side in the browser with no server required
• Open source under MIT license, free for developers and commercial use
• Installable via CDN script tag or npm package
• Provides a JavaScript API (load and detect) to return bot detection results

Frequently asked questions