Digital marketing term
SSL
SSL, now typically implemented as TLS, is the encryption protocol that secures the connection between a visitor's browser and your website, shown by the padlock and HTTPS in the address bar.
Detailed explanation
SSL/TLS encrypts data traveling between a browser and a server, so information like login credentials, form submissions, and payment details cannot be read if intercepted in transit. A site with a valid SSL certificate serves over HTTPS instead of HTTP, and browsers flag sites without one as “Not Secure,” which visibly affects visitor trust, especially on any page that collects personal or payment information.
Beyond security, HTTPS has been a confirmed, if lightweight, Google ranking signal since 2014, and it is a prerequisite for several modern web features and APIs. Certificate setup ranges from free, automated options, such as Let's Encrypt, often bundled by hosts, to paid certificates with extended validation; what matters more than the certificate type is making sure the whole site, not just the checkout page, is served over HTTPS, with no mixed-content warnings from HTTP resources loading on an HTTPS page.
For “what is SSL” or “why does my site need HTTPS” searches, this entry is a starting point. See SEO for how HTTPS fits into the broader ranking picture and Browser for how encryption status is surfaced to visitors.
Frequently asked questions
- Is SSL the same thing as HTTPS?
- Related but not identical. SSL/TLS is the underlying encryption protocol; HTTPS is HTTP running over that encrypted connection. In casual use, “SSL” and “HTTPS” are often used interchangeably to mean a secured site.
- Does having SSL/HTTPS actually improve my SEO rankings?
- Google has confirmed it is a ranking signal, though a relatively minor one compared to content quality and relevance. Its bigger practical impact is usually avoiding the “Not Secure” browser warning that can scare off visitors and hurt trust and conversion.
Related terms
Internal links for the topic cluster — read these concepts together.
- SEOSEO (Search Engine Optimization) is the set of technical and content practices that help a website rank more visibly in organic search results.
- On-Page SEOOn-Page SEO: On-page search engine optimization. This digigund glossary entry explains how the term is used in digital marketing.
- Off-Page SEOOff-Page SEO: Off-page search engine optimization. This digigund glossary entry explains how the term is used in digital marketing.
- SERPSERP (Search Engine Results Page) is the page of results a search engine shows after a user enters a query.