Definition
HTTPS (HyperText Transfer Protocol Secure) is the secure version of the HTTP protocol, using SSL/TLS encryption to protect data exchanged between the browser and server. An SSL/TLS certificate is required to enable HTTPS. Google confirmed that HTTPS is a ranking signal since 2014. Modern browsers display a 'Not Secure' warning for HTTP sites, impacting user trust. Let's Encrypt offers free automated SSL certificates.
Key Points
- Google ranking signal since 2014
- Browsers display 'Not Secure' for HTTP sites
- Free certificates available via Let's Encrypt
Practical Examples
HTTP to HTTPS migration
A site migrates from HTTP to HTTPS with 301 redirects and sees user trust increase. Organic traffic grows by 5% in 2 months.
Let's Encrypt certificate
A small business installs a free Let's Encrypt SSL certificate in 5 minutes via their host, removing the browser's 'Not Secure' warning.
Frequently Asked Questions
Not technically mandatory, but strongly recommended. It's a Google ranking signal and browsers visually penalize HTTP sites. There is no reason to stay on HTTP.
Install an SSL certificate, set up 301 redirects from HTTP to HTTPS, update your internal links and sitemap, and verify in Search Console.
Go Further with LemmiLink
Discover how LemmiLink can help you put these SEO concepts into practice.
Last updated: 2026-02-07