What Is a Doctype?
The doctype declaration (<!DOCTYPE html>) tells the browser which HTML version to use. Without it, browsers render in "quirks mode" which causes layout issues.
What Is Character Encoding?
UTF-8 is the universal standard supporting every character in every language. Declared using <meta charset="UTF-8">. Without it, special characters may display incorrectly.
How RankNibbler Checks This
RankNibbler checks the first line of HTML for a valid doctype and scans meta tags for charset. Results appear in the Content tab.
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