A web designer can be any of the following people:

• Graphic Designers (Photoshop, Illustrator, Dreamweaver)
• Content Designers (SEO, text, marketing)
• UI (user interface) and UX (user experience) designers
• Production design and programming (HTML , CSS , jQuery, Dreamweaver)
• Media, interactive programming (Flash, Ajax, CSS3. canvas)
• Programming (HTML , CSS , jQuery. Javascript, PHP, SQL, Ruby-on-Rails, Ajax)