Open the artwork’s Passport settings on an eligible paid membership with custom certificate branding enabled. Expand Certificate branding and choose Use my branding on this certificate. Enter the brand name, choose an accent color, and optionally upload a PNG, JPEG, or WebP logo up to 5 MB. A very detailed logo may need a simpler source to fit the prepared certificate.
Review the certificate preview, signature, artwork facts, and terms before issuing. New certificates and PDFs retain that branding while ARTMOXY verification remains visible. Already-issued certificates keep their original branding. Changing gallery styling or uploading a new logo does not rewrite certificates that have already been issued.