BIMI Builder & Validator
Build a new BIMI record from scratch, or paste one to check its syntax.
Logo (l=)
Must be HTTPS and conform to the SVG Tiny Portable/Secure profile — not a regular SVG export.
Verified Mark Certificate (a=) — optional
Most major mailbox providers (Gmail, Yahoo) require a VMC to actually display the logo. Without it, the record is still valid but the logo may not show.
Generated BIMI record
v=BIMI1; l=Publish this as a TXT record at default._bimi.yourdomain.com. BIMI also requires DMARC enforcement (p=quarantine or p=reject) to work. Generated entirely in your browser.
What this tool does
The builder assembles a valid BIMI TXT record from a logo and, optionally, a certificate URL, and the validator checks the syntax of a record you already have — both run entirely in your browser, so nothing you type is sent to a server or logged.
- Build a record — provide the HTTPS URL to your SVG logo (l=) and, optionally, the URL to a Verified Mark Certificate or Common Mark Certificate (a=). The record is generated immediately, along with any validation issues found.
- Validate a record — paste in an existing record and get a tag-by-tag breakdown plus any syntax errors. This checks record syntax only, not whether the SVG file itself conforms to the required profile.
BIMI only works once DMARC is enforced, so confirm that first with the DMARC Analyzer. Once published, use the BIMI Analyzer to confirm the logo and certificate actually resolve correctly.
Frequently asked questions
Is the BIMI builder free?
Yes. Building or validating a BIMI record is free and doesn't require an account or email address.
Do I need a certificate to use the builder?
No, the a= certificate field is optional and the builder will generate a valid record without it. However most major mailbox providers, including Gmail and Yahoo, require a VMC or CMC certificate before they'll actually display the logo, even if the record itself is valid.
What's the difference between the builder and the analyzer?
The builder creates a new record from a logo and certificate URL, or validates syntax you paste in, without touching DNS or fetching the actual files. The BIMI Analyzer instead resolves a real domain's published record over live DNS, fetches the logo and certificate, and checks whether DMARC enforcement is strong enough for BIMI to actually work.