validators & verifiers
clean up your act
Broken web sites server no one well. You risk having your site not display correctly. Search engines penalize sites with broken links and other coding errors.
Good clean HTML, CSS, and JavaScript code is well behaved across multiple browsers on multiple devices. Validators walk through your site identifying areas you need to fix. I suggest running validators and verifiers on all new pages before launching them and across your whole site periodically to flush out errors that creep in over time.
W3C HTML validator checks the markup validity of HTML, XHTML, etc.
W3C Link Checker looks for issues in links, anchors & referenced objects pages, style sheets, or recursively in a whole site
W3C CSS Checker checks CSS style sheets
Google, Bing, and Yahoo! have webmaster tools that run diagnostics on your site and make suggestions about your code: Google Bing (includes Yahoo)
Xenu is an automated tool I use to locate broken links and other errors. While making sitemaps, this website also find broken links.
NetMechanic offers a suite of free validators and checkers for things like HTML errors, broken links, spell checking, and validation.
Copyright 2012 Jerry Whiting. All rights reserved.