Alex M. Alex M. - 1 month ago 16
HTML Question

Markup Validation, Errors found

I've tried recently to validate a web page and every time I run the validator it outputs the same errors, although the structure of the page seems legit.

<!DOCTYPE html>
<html lang="en-US">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">

It should be something wrong with the source but I can't figure it out..
link to markup validation results


Based on looking at the actual errors the document contains, a few recommendations:

Use the current W3C HTML Checker at

Check your document with not is written in Perl and uses SGML and DTDs to perform validation and so is very limited in the kinds of checks it can do (e.g., it can’t do precise datatype/microsyntax checking of attribute values. And if your document uses a modern doctype (<!DOCTYPE html>, the “HTML5” doctype declaration), it just hands the doc of to for checking anyway. checks your document against the current HTML spec (aka HTML5), and includes many types of checks which cannot do.

Checking brings up two points:

Always start your documents with <!DOCTYPE html>

The document at currently doesn’t have any document type declaration at all. That’s an outright error, because the lack of a doctype can cause unexpected behavior in browsers. And if you use any doctype other than <!DOCTYPE HTML> it is also easier to get part of the doctype wrong in a way that cause unexpected behavior in browsers.

Always include <meta charset="utf-8"> in your documents

The character encoding for is not declared in the HTTP headers that the document is served with nor in the document itself. Documents on the Web should be encoded in UTF-8 and to be certain their encoding is always made clear to browsers and other tools, documents should always include a <meta charset="utf-8"> element.