Branding

Your logo appears in the app and on the public verification page — the one screen a stranger checking a certificate sees. The certificate PDF itself takes the seal below. PNG or JPEG, under 512 KB. The file's actual content decides whether it is accepted: renaming a file does not get it past the check, and SVG is refused outright because it can carry script.

Drawn centered at the top of the certificate, scaled to fit and never stretched. JPEG, or a plain 8-bit PNG without transparency — a certificate is printed on paper, so a half-transparent seal has nothing to blend with. Interlaced, 16-bit, palette and alpha PNGs are refused with a reason rather than quietly dropped. Under 2 MB.

The ink color used on top of the accent is chosen automatically so it always meets WCAG AA — you cannot pick a combination that renders unreadable buttons.

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