The Web Design Group

Validators and Checkers

Don't forget to check out the Web Design Group's own validators and checkers in our Tools section.

W3C HTML Validation Service
An easy-to-use validator from the developer of A Kinder, Gentler Validator.
A Real Validator
Shareware HTML validator for Windows; offline version of the WDG HTML Validator.
SP
James Clark's multi-platform SGML parser that includes the SGML validator nsgmls.
HTML TIDY
Dave Raggett's free cross-platform utility for cleaning up HTML.
BBEdit 5.0
Shareware text and HTML editor for the Macintosh that includes an HTML validator.
STG XML Validation Form
Syntax validator for XML documents.
Web Page Backward Compatibility Viewer
Allows authors to view a page with selected tags unsupported--a good tool for ensuring cross-browser compatibility.
Web Page Purifier
Allows authors to view a page "purified" to be compliant with HTML 2.0, HTML 2.0+Tables, HTML 3.2, or webtv 1.1.
Bobby
Checks HTML for browser compatibility and accessibility.
Weblint
Weblint checks the syntax and style of HTML documents to pick off the "fluff."
LinkAlarm
Fee-based service that regularly checks a site's links and sends a report by e-mail.
NetMechanic
Link tester and HTML lint that scans a site and sends a report by e-mail.
HTML PowerTools
Shareware Windows program that includes an offline link checker and a configurable quasi-validator.
Linkbot
Tetranet Software's link checker and site management tool for Windows.
Linbot
A free Linkbot clone written in Python.
MOMspider
Perl-based link checker and analyzer for Unix.
CyberSpyder Link Test
Shareware Windows program to check the validity of hyperlinks.
LinkScan
Server-based link checker for UNIX and Windows NT.
Open Directory HTML Validators and Debuggers
A list of validation and checking links.