You can attempt to fetch a local file named ads.js or a known tracking URL. If the request fails, it's a strong indicator of a network-level blocker.

This method is virtually instantaneous and requires only a few lines of code.

The fastest way to detect an adblocker is to use —a dummy element that mimics an advertisement—and then check if the browser has hidden or failed to load it. Core Logic

: Slightly slower than element-checking because it relies on a network timeout. Summary of Detection Methods

: Catching DNS-level blockers (like Pi-hole) that element-hiding checks might miss.

: Tools like ad block checker provide pre-built functions if you prefer not to write custom logic. AI responses may include mistakes. Learn more