H1 Tag
Related Terms
Header Tags
HTML heading elements (H1 through H6) that break content into a scannable hierarchy. Proper header tag usage improves readability for visitors and gives search engines a structured outline of your page's topics.
Hilltop Algorithm
A link-analysis method Google adopted in 2003 that identifies "expert" documents on a topic based on who links to them. Pages that receive backlinks from recognized expert sources rank higher for related queries.
Holistic SEO
An integrated approach to optimization that addresses content quality, technical health, user experience, and off-page authority together instead of treating each in isolation. Holistic SEO produces more durable rankings because it satisfies search engines and users simultaneously.
Hreflang
An HTML attribute that tells search engines which language and regional variant of a page to show different audiences. Correct hreflang implementation prevents international duplicate content issues and ensures the right version reaches the right users.
HTTP 200 Response Code
The standard server response confirming that a requested page loaded without errors. A 200 status is what you want every important URL on your site to return when crawled by search engines.
HTTPS
The encrypted version of HTTP that secures the data exchanged between a visitor's browser and your web server. Google confirmed HTTPS as a ranking signal in 2014, and modern browsers now flag non-HTTPS sites as "Not Secure."