Is This Website Built With B12? How to Tell
AI website builder aimed at professional services, with scheduling, payments and intake forms.
Paste the URL into the analyzer and the Overview card shows a “Built with B12” badge when the page matches, alongside the full tech stack, SEO audit and performance scores.
What B12 is
B12 generates a website draft from a description of a professional services business, then layers on client-facing tools: online scheduling, invoicing, e-signatures and intake forms. It is pitched at law firms, accountants, consultants and agencies, and includes human design review on higher tiers.
Signals the analyzer checks for B12
The detector searches the page HTML for any of these strings. One match reports the builder with high confidence.
b12.iob12sites.com
How to check it yourself
- Check the address. Sites on *.b12sites.com are hosted by B12.
- Open the page, press Ctrl+U (Cmd+Option+U on a Mac) to view the source, then use Ctrl+F to search it. Search for "b12.io" in script and stylesheet URLs and in form actions.
- Look for B12's embedded tools: scheduling widgets and intake forms that post to b12.io endpoints.
- A 'Website by B12' credit in the footer is present on most plans.
What B12 sites usually show in an audit
- Pages are served from B12's platform with HTTPS and a CDN, so transport security and basic caching checks pass.
- Embedded scheduling and form widgets add third-party JavaScript, which the analyzer's third-party impact section will list as a performance cost.
- AI-drafted copy for service firms tends toward generic claims. The content section usually recommends more specific, locally relevant text.
- Trust signals such as credentials, case results and reviews are often missing from the generated draft even though they matter for professional services.
These are tendencies from audits, not rules. Run the analyzer on the site in question, then use the fix guides for anything it flags, or compare it with a competitor.