Security headers quick reference
Learn more about headers that can keep your site safe and quickly look up the most important details.
How to use HTTPS for local development
Sometimes, you need to run your local development site with HTTPS. Tools and tips to do this safely and quickly.
When to use HTTPS for local development
Using http://localhost for local development is fine most of the time, except in some special cases. This post explains when you need to run your local development site with HTTPS.
Referer and Referrer-Policy best practices
Best practices to set your Referrer-Policy and use the referrer in incoming requests.