You can do a lot of things with HTTP Headers. We are interested in:
- Request Headers
- Response Headers
Important Request HTTP Headers that matters in SEO:
- Link
- X-Robots-Tag
- Cache-Control
- ETag
- Last-Modified
- Content-Type
Some Security Headers:
- Content-Security-Policy
- Strict-Transport-Security
- X-Content-Type-Options
- X-Frame-Options
You can use the following methods to see the Headers:
- Use cURL command in the Terminal or Command Line Tool
curl -I https://selfcanonical.com- Use the Redbot tool with explanation: https://redbot.org/
- Use the browser’s network tab and click on the 1st item