Check Cascading Style Sheets (CSS) and (X)HTML documents with style sheets:
http://jigsaw.w3.org/css-validator/
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets, MobileOK content, or to find broken links, there are other validators and tools available.
Tool untuk analisa kecepatan load web site anda.
http://www.websiteoptimization.com/services/analyze/index.html
Di bawah ini ada list ukuran banner yang paling sering digunakan. Untuk standard besar file diharapkan tidak melebihi 25kb. Read More →