The app shell is empty for crawlers
Base44 renders everything in the browser. Search engines and link previews see a page with no text, so the description you wrote in the editor may be all that reaches them.
Was this site built with Base44? How to tell
AI builder · default hosting *.base44.app
Base44 builds full applications from a prompt and was acquired by Wix in 2025. Default hosting is *.base44.app, but the markers that matter are inside the page, because they stay after a move to a custom domain.
Two are reliable: images served from media.base44.com, and the key base44_access_token that the runtime stores in the browser.
The verdict and the evidence are free. The improvement report needs a free account.
How to check it yourself
No tools needed- Look at the address:
*.base44.appis Base44 hosting. - Search the source for
media.base44.com. Logos and uploaded images are served from there even on a custom domain. - Search the source for
/api/app-logs/, the page-view logger Base44 injects. - Open the bundle and search for
base44_access_tokenorbase44SharedInstances.
What the scanner looks for
6 live rulesThese are the rules enabled in the database right now, with the weight each one carries. A single strong match is enough to name the builder; the weights decide how confident the verdict is.
| Rule | Where it looks | What it matches | Weight |
|---|---|---|---|
| Base44 page-view logger | the page source | /api/app-logs/[0-9a-f]{24}/log-user-in-app | 92 |
| Base44 hosting domain | the site address | (^|\.)base44\.app$ | 90 |
| Base44 auth storage key in the JS bundle | the JavaScript bundle | base44_access_token|base44SharedInstances | 90 |
| Base44 media CDN | the page source | media\.base44\.com/ | 88 |
| Base44 script host | the host a script is loaded from | (^|\.)base44\.(app|com)$ | 85 |
| Base44 SDK in the JS bundle | the JavaScript bundle | @base44/sdk|base44\.app/api | 85 |
What Base44 sites usually get wrong
Analytics you did not choose
Generated projects often include a third-party session recorder. If you are in the EU, that is a consent and privacy-policy obligation you may not know you have.
Data access rules left open
The convenience of a generated backend is that it works immediately. Check who is allowed to read each table before you put real customer data in it.
Questions
Can Base44 be detected on a custom domain?
Yes. The media host and the token in the bundle stay unless you rebuild the front end yourself. We verified this on live Base44 sites.
Is Base44 the same as Wix?
Wix acquired Base44, but they are different products with different markers. A Wix site is recognised by its own generator tag and script hosts.
