Contributor (, ) By JensonF 0 0/0 0 0 recommends Starting Cost $0.00 Terms Free ThemeDetect is a free online tool, which you can use to detect what theme a specific website is using. You only need a URL to detect the theme. They also provide an API for batch detections with a free plan limiting to 1000 API calls per month. Category(s) Web Design Stats & Tracking