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Paste any web address above and we will tell you whether the site runs on one of the AI builders we can identify: Lovable, Base44, Framer, Bolt.new, Replit, v0 or Durable. We read the code the site sends to a browser and look for the platform's own fingerprints, not for writing that sounds like a machine. A match tells you which builder the site runs on. It cannot tell you how much of the site a person made, and this page explains why.
These builders host the sites they make, so the finished site keeps calling their servers and scripts. That trace is what we read. The table below shows what we have tested on real sites, including sites that moved to their own domain, because a detector that only recognises something.lovable.app is not doing much.
Every scan that finds one of these builders adds to the count below, so far 46 across all seven. We started counting them in November 2026, which makes this table young, and it updates with every scan rather than being typed in here.
Some AI tools build a site and hand it over. Once that happens there is nothing left that points back to the tool, so we would rather say so than guess. For the tools below, we report the platform the site actually runs on.
This is the point most AI website checkers skip. Our result names the builder, and that is a different claim from "AI made this". Framer is the clearest case: designers were building sites in it by hand long before it added AI features, and the code looks the same either way. Replit is similar, since plenty of developers write their own code there.
Lovable, Base44 and Bolt.new sit closer to the claim, because prompting is the main way people use them. Even then, someone may have rewritten most of the page. Be wary of any tool that prints an AI percentage for a site. Nothing in the code measures that, so the number can only be an estimate.
You do not need our tool for this. It takes about a minute in any desktop browser.
lovable, base44, bolt.new/badge.js,
framerusercontent, replit and Created with v0.If you scanned a site because you liked it, the builder is a fair place to start. Base44 turns a plain description into a working app and hosts it for you, so there is nothing to deploy. For a business site that has to be edited by non-developers for years, a regular platform is often the safer choice, and our guide to what a CMS is explains the difference.
Sometimes. If the site runs on a builder that hosts its own output, yes, we can name the builder. If an AI tool wrote the code and a person published it elsewhere, no detector can prove it.
Yes. Paste a web address and scan it, with no account. Our Chrome extension does the same from any page you are on.
Because we report what the site runs on today. A site planned in one tool can be published on another, and a builder's name in the marketing means little if the code sits on WordPress.
Partly. Removing a badge script is easy, and on Bolt.new that removes our main signal. Sites hosted by Lovable or Base44 are harder to disguise, because they keep loading files from the platform.
No. It tells you how the site was made, not whether it is any good. Judge the content, the contact details and who stands behind it.