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Today, custom domains on GitHub Pages are gaining support for HTTPS.
GitHub Pages is the best way to quickly publish beautiful websites for you and your projects. Just edit, push, and your changes are live. GitHub Pages has supported custom domains since 2009, and sites on the
*.github.io domain have supported HTTPS since 2016. Today, custom domains on GitHub Pages are gaining support for HTTPS as well, meaning over a million GitHub Pages sites will be served over HTTPS.
HTTPS (most recognizable as the lock icon in your browser’s address bar) encrypts traffic between GitHub’s servers and your browser giving you confidence that the page you asked for is the page you’re reading, from the site you think it is, and that others can’t snoop on or modify its contents along the way.
We have partnered with the certificate authority Let’s Encrypt on this project. As supporters of Let’s Encrypt’s mission to make the web more secure for everyone, we’ve officially become Silver-level sponsors of the initiative.
Action may be required on your part to secure your custom domain.
If you are using
ALIAS records for your custom domain, you’re all set and your site should be accessible over HTTPS. If it is, and your site loads correctly over HTTPS, you can optionally enforce HTTPS in your repository’s settings. Users who request your site over HTTP will be upgraded to HTTPS.
If you are using
A records, you must update your site’s DNS records with new IP addresses. Please see our guide to setting up your custom domain with Pages and update any A records you might have set.
Once your updated DNS records have propagated, and you’ve confirmed that your site loads correctly over HTTPS, you can optionally “Enforce HTTPS” for your domain in your repository’s settings, ensuring users who request your site over HTTP are upgraded to HTTPS.
These new IP addresses don’t just allow us to serve your site over HTTPS, but also places your site behind a content delivery network (CDN), allowing us to serve your site from data centers around the world at fast speeds, and offering additional protection against DDoS attacks. While the previous IP addresses will remain available for a transition period, we recommend you migrate to the new IP addresses to gain these benefits.