SSL / TLS Certificate

An SSL certificate (more precisely, a TLS certificate since SSL itself is deprecated) encrypts data in transit between browser and server. You see it as the padlock icon in the address bar and the https:// prefix instead of http://.

Required for any modern website. Google demotes unencrypted pages in search rankings, and Chrome flags HTTP sites as 'Not Secure.' For short links it matters doubly: a non-HTTPS short link looks suspicious before anyone even clicks.

Free certificates are available through Let's Encrypt with automatic renewal. promolinks.net automatically issues and renews TLS certificates for every brand domain and custom domain — no manual steps required.