Does SSL Affect SEO? What Google Actually Says

Yes, SSL affects SEO. Google confirmed HTTPS as a ranking signal in August 2014. But the real impact isn’t the ranking boost itself — it’s the chain of effects that HTTPS triggers.

What Google has said officially

August 2014: Google announced HTTPS as a “very lightweight signal” — affecting less than 1% of global queries, carrying less weight than content quality. They described it as a “tiebreaker” between otherwise equal pages.

Since then: Google has repeatedly stated they want to see the entire web move to HTTPS, but have not upgraded the signal’s weight significantly. The ranking impact remains small compared to content relevance, backlinks, and user experience.

What this means: HTTPS alone won’t jump you from page 5 to page 1. But all else being equal, an HTTPS page outranks an HTTP page. And in competitive niches, every signal counts.

The bigger SEO impact: “Not Secure” warnings

The indirect effect is larger than the direct ranking signal:

Chrome’s timeline:

• Chrome 56 (January 2017): “Not Secure” label on HTTP pages with password or credit card fields
• Chrome 68 (July 2018): “Not Secure” on all HTTP pages
• Chrome 79+: Full-page interstitial warning for some mixed content

The effect on user behavior:

• Bounce rates increase when users see “Not Secure” — studies show 50-80% of users leave
• Higher bounce rates signal to Google that the page doesn’t satisfy user intent
• This indirectly hurts rankings through engagement metrics

So even though the direct HTTPS ranking signal is “lightweight,” the cascading effect through user behavior is significant.

HTTP/2: the performance bonus

HTTPS enables HTTP/2, which makes pages load faster:

• Multiplexing — multiple requests over one connection
• Header compression — less overhead per request
• Server push — preload resources before the browser asks

Faster page load → better Core Web Vitals → better SEO. HTTP/2 requires HTTPS in all major browsers.

What about certificate type (DV vs OV vs EV)?

Google has confirmed that the type of SSL certificate does not affect rankings. A free Let’s Encrypt DV certificate and a $500 EV certificate provide the same SEO signal. Full comparison →

Common misconceptions

“Switching to HTTPS will boost my rankings immediately.” The ranking signal is a tiebreaker, not a catapult. You’ll see the “Not Secure” warning disappear (which reduces bounce rate), but don’t expect a dramatic rank change from HTTPS alone.

“I’ll lose rankings during the HTTP→HTTPS migration.” There may be a brief fluctuation as Google recrawls and reindexes. Use 301 redirects, update your sitemap, and add the HTTPS property in Google Search Console. Most sites see rankings stabilize within 2-4 weeks.

“Free SSL certificates hurt SEO.” No. Google does not differentiate between free and paid certificates, or between CAs. A Let’s Encrypt certificate provides the same SEO signal as any other.

SEO migration checklist

When switching from HTTP to HTTPS:

1. Get a certificate — GetHTTPS (5 minutes, free)
2. Install it — Nginx, Apache, cPanel, etc.
3. Set up 301 redirects — from all HTTP URLs to HTTPS (guide)
4. Update internal links — change http:// to https:// in your code and content
5. Fix mixed content — ensure all resources load over HTTPS (guide)
6. Update sitemap — regenerate with https:// URLs
7. Update Google Search Console — add the https:// property
8. Update Google Analytics — change default URL to https://
9. Update canonical tags — <link rel="canonical" href="https://...">
10. Submit updated sitemap — in Search Console

Frequently asked questions

How long does it take for HTTPS to affect rankings?

Google recrawls pages at varying rates. After switching, most sites see the full effect within 2-4 weeks. Submit your updated sitemap in Search Console to speed up reindexing.

Will I lose my backlinks when switching to HTTPS?

301 redirects pass link equity. External sites linking to http://yourdomain.com/page will follow the redirect to https://yourdomain.com/page. You don’t lose backlink value if redirects are properly configured.

Do I need HTTPS for a blog with no login or payment?

Yes. Google marks all HTTP pages as “Not Secure.” Users bounce. And you miss out on HTTP/2 performance gains. HTTPS is free and takes 5 minutes — there’s no reason not to.

Does HSTS affect SEO?

HSTS itself doesn’t directly affect rankings. But it prevents downgrade attacks and ensures users always reach the HTTPS version, which reinforces the SEO benefits of HTTPS.