HTTP vs HTTPS: what’s the difference?

How HTTP and HTTPS differ, what changes for visitors and search engines, and what you need to move a site fully to HTTPS.

ComparisonBeginner2 min readUpdated
HTTPHTTPS
EncryptionNone — readable by anyone on the networkEncrypted with TLS
Server identityNot verifiedVerified by a certificate
Default port80443
Browser label“Not secure”Secure / padlock
Search enginesDisadvantagedPreferred
Needed for modern browser featuresNo accessYes
Cost on Traxio—Free

What moving to HTTPS involves

  1. A certificate — automatic on Traxio. How free SSL certificates work on Traxio
  2. A redirect from http:// to https://, so every visitor and old link lands on the secure version. How to force HTTPS (redirect HTTP to HTTPS)
  3. Updating internal links and images to https://, so pages don’t load insecure content. How to fix mixed content warnings
  4. Updating the site’s own address setting, for applications such as WordPress. How to change your WordPress site URL

Does HTTPS slow a site down?

Not measurably. Modern TLS is fast, and HTTPS enables HTTP/2 and HTTP/3, which usually make pages load faster than plain HTTP.

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