Icon of program: HTML Validator

HTML Validator for Windows

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Used HTML Validator for Windows?

The Download Now link will prompt a local download of the Firefox extension. To install the extension directly, open the file using your Firefox browser.

Editors’ Review

Download.com staff

This valuable freeware tool allows Web developers to check their Web pages for HTML errors. HTML Validator adds an unobtrusive icon in the right-hand corner of your Firefox window.

Hovering your mouse over the icon reveals errors and warnings for the page. Double-clicking the icon introduces a detailed window with the current Web page's lines of code, along with the errors and warnings found. The Options menu allows you to check the HTML page locally using different algorithms. A handy Help key explains what each symbol means, and novice users will appreciate the shortcut button to Htmlpedia. HTML Validator provided detailed error information for each Web page we checked. And using the Clean Up functionality, we were able to apply quick fixes to the code.

HTML Validator's straightforward design and effective presentation make it an easy tool to recommend for any Web developer, or those just interested in code.

Icon of program: HTML Validator

HTML Validator for Windows

Download now

Used HTML Validator for Windows?

Explore More

Full Specifications

GENERAL
Release
Latest update
Version
0.9.5.1
OPERATING SYSTEMS
Platform
Windows
Operating System
  • Windows Vista
  • Windows XP
  • Windows 7
  • Windows 10
Additional Requirements
Firefox 5.0 - 9.0
POPULARITY
Total Downloads
1,360
Downloads Last Week
6
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Program available in other languages

Last Updated

User Reviews

1/5

1 User Votes

Developer’s Description

By Marc Gueury
Add an HTML validation feature to your Firefox.

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon in the status bar when browsing. The details of the errors are seen when looking the HTML source of the page. The extension is based on Tidy and OpenSP (SGML Parser).

Both algorithms were originally developed by the Web Consortium W3C. And now extended and improved by a lot of persons. Both algorithms are embedded inside Mozilla/Firefox and makes the validation locally on your machine, without sending HTML to a third party server. Each algorithm has advantages and inconvenient.

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