HTML Lang & Document Setup Checker
Paste a full HTML document to verify it declares a valid language, a page title, a character encoding, and a responsive viewport. Results update as you type.
Paste some HTML above to run the document-setup checks.
Paste a full HTML document to verify it declares a valid language, a page title, a character encoding, and a responsive viewport. Results update as you type.
Paste some HTML above to run the document-setup checks.