SSL Encryption

SSL encryption secures the connection between a visitor's browser and your web server by scrambling the data that passes between them, so no one in the middle can read it. Sites using it load over HTTPS and display a padlock. The current standard is technically TLS, though "SSL" persists as the everyday name.

Why it matters for SEO and trust

Google confirmed HTTPS as a lightweight ranking signal back in 2014, and the practical stakes have only grown. Browsers now flag plain HTTP pages as "Not secure," which spooks visitors and depresses conversions on any page with a form. For e-commerce and lead-gen sites, encryption isn't optional — it's the baseline users expect before they type a card number or an email address.

Getting it right

Install a valid certificate, redirect every HTTP URL to its HTTPS version, and eliminate mixed content — secure pages that still load an image or script over HTTP. An online store once migrated to HTTPS but left product images on HTTP URLs; browsers detected the mixed content, hid the padlock, and showed a "not fully secure" warning at checkout. Switching those image links to HTTPS restored the padlock and recovered abandoned carts.

• Use a certificate that covers every subdomain you serve.
• Add HSTS so browsers default to the secure version automatically.
• Recheck for mixed content after any redesign or plugin change.

Certificates and clean HTTPS setup fall squarely under technical SEO.