Directory of Validators and Lints Resources

Home > Computers > Data Formats > Markup Languages > HTML > Tools > Validators and Lints

HTML Validators check HTML against the formal HTML specification published by the World Wide Web Consortium (W3C), giving an error report. HTML Lints check HTML for compatibility with different browsers and screen sizes, download times, spelling, and more. If you are only going to use one, use a validator. HTML which follows the HTML specification will be compatible with the widest audience. For compatibility with disabled users, check your documents against the W3C's Web Site Accessibility Guidelines.

Subcategories

• Offline

Resources in This Category

• Cleanup HTML

  http://www.cleanuphtml.com/cleanup.html
  On-line tool based on Tidy to clean up HTML code.

• Dirty Markup

  http://www.dirtymarkup.com/
  Combines the power of HTML Tidy, CSS Tidy, JS Beautify, and the Ace editor to effortlessly clean up code.

• Dr. Watson

  http://watson.addy.com/
  Checks HTML code, links, spelling, download time and link popularity.

• HTML and XHTML Syntax Checker

  http://www.onlinewebcheck.com/
  Locates webpage coding errors, lists error number and page source.

• HTML Tidy Online

  http://infohound.net/tidy/
  Cleans up coding errors, especially useful for deeply nested ones.

• HTML/XML Validator

  http://validator.aborla.net/
  Validates and repairs HTML, XHTML, and XML. Also includes accessibility checking.

• Microsoft Word 2000 HTML Mess Cleaner

  http://www.algotech.dk/word-html-cleaner-input.htm
  Removes clutter from Microsoft Word 2000-generated HTML. ASP source code available for purchase.

• PowerMapper

  http://www.powermapper.com/
  Checks any website for broken links, spelling errors, browser compatibility, accessibility, web standards validation and search engine issues.

• Site Validator

  http://sitevalidator.com/
  A multi-page validator that checks HTML and CSS. Paid service

• Validation Bookmarklets

  http://www.squarefree.com/bookmarklets/validation.html
  JavaScript bookmarklets which check alt text, broken images, small screen readability, and HTML validity.

• Validator Pro

  http://html.validator.pro/
  Multi-page validator checks HTML and broken links. 50 pages free, 75 with registration

• Validome

  http://www.validome.org/
  Validation services for HTML, XHTML, WML, XML, DTD, Schema, RSS and Atom feeds and even Google sitemaps.

• vldtr

  http://vldtr.com/
  Validates HTML pages, CSS files and RSS or Atom feeds against W3C standards. Lists of files can be saved and revalidated later.

• W3C Markup Validation Service

  http://validator.w3.org/
  World Wide Web Consortium validator, maintained at W3C by W3C staff and collaborators. Checks the markup validity of Web documents in HTML, XHTML, SMIL and MathML.

• Walidator

  http://www.walidator.com/
  Portal to several validators and URL analyzers.

• WDG HTML Validator - HTML Help

  http://htmlhelp.com/tools/validator/
  Produces easy to read HTML error messages. Can validate one page or a batch of pages at one time.

• Web Page Backward Compatibility Viewer

  http://www.delorie.com/web/wpbcv.html
  Uncheck tags to be unsupported and see how the page looks.

• Web Page Purifier

  http://www.delorie.com/web/purify.html
  Checks how a webpage looks with different HTML versions.

• Web Validators

  http://validator.czweb.org/
  Links to validators for XHTML, HTML, CSS, RSS, XML, and RDF documents.

Related Categories

• Home > Computers > Data Formats > Markup Languages > XML > Validation
• Home > Computers > Internet > Web Design and Development > Authoring > Online Tools > Checking and Debugging

 

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