Is LeetTest safe?

Clean risk

LeetTest fetches backend-supplied JavaScript for the active LeetCode problem and runs it in its sandbox.

When you open the popup on a LeetCode problem page, LeetTest sends the active problem URL or slug to kohlenz.com/leettest and receives generator code. The extension runs that backend-supplied code in a sandbox iframe, then writes the generated testcase into LeetCode's testcase editor.

KramerJakev1.3.1Chrome Web Store
0Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Where it sends data

Destinations our analysis observed LeetTest contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • kohlenz.com

    LeetTest sends data to kohlenz.com. No other extension we have analysed sends data here.

Updated 30 September 2026diinamlcdbbpfebknmhajjaijpflnaoe