This tool is an ongoing experiment in better HTML checking, and its behavior remains subject to change

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Checker Input


  1. Info: The Content-Type was text/html. Using the HTML parser.

  2. Info: Using the schema for HTML with SVG 1.1, MathML 3.0, RDFa 1.1, and ITS 2.0 support.

  3. Error: Element title must not be empty.

    From line 1, column 23; to line 1, column 30


There were errors.


  1. <!DOCTYPE html><title></title><object data=a usemap=#b ><a href=abc>abc</a></object><map name=b><area href=c alt="d" ></map>

Total execution time 3 milliseconds.

About this checkerReport an issueVersion: 15.8.4