html.gif

Search Engines, HTML Validation, & Link Checkers

The Science Page uses and recommends the following online HTML and CSS Validators and Link Checkers:


Search Engines

  • Blekko - a smaller independent search engine.
  • DuckDuckGo - a smaller independent search engine.
  • Google - the search engine with the largest global reach.
  • Internet Archive - if you find broken links you can see what those pages looked like in the past.
  • Bing - the default search in Windows. It has around 10 to 15% market share in the US and also powers Yahoo! Search.

How do Search Engines Work?

What are People Searching for?

  • Google Keyword Planner - gives 12 months of historical data, requires an AdWords advertiser account which takes $5 to activate.
  • Google Trends - a free, but less granular version of Google's keyword data
  • Bings Ads Intelligence - a Microsoft Excel plugin offering access to Microsoft's search data, requires a Bing Ads account which takes $5 to activate.
  • Various search marketing companies like Wordtracker, WordStream, SEObook, and Wordze also offer commercial keyword research tools.

Directories:

  • DMOZ - Open Directory Project edited by volunteers.
  • Yahoo! Directory - one of the oldest web directories
  • Wikipedia - similar to DMOZ in structure, but hosts articles instead of just categorized link lists

More Search Engines at:

HTML VALIDATION:

W3C.gif
W3C HTML
Validation Service from W3C

 

LINK CHECKER:

Xenu Link Checker
Xenu

CSS VALIDATION

w3ccss.gif
W3C CSS
Validation