1. **Visual Design**: Web designers create the visual appearance of a website or web application, including layout, colors, fonts, and graphic elements. This involves the use of graphic design tools like Adobe Photoshop or Illustrator.
2. **Usability and User Experience (UX)**: They ensure that the site or web application is easy to use and provides a positive user experience. This includes navigation, content layout, and interaction with the site.
3. **Responsive Design**: Web designers develop sites that adapt to different screen sizes and devices, such as desktop computers, tablets, and mobile phones.
4. **Front-End Development**: They often work on coding the front-end of the website or web application using HTML, CSS, and JavaScript to bring their designs to life.
5. **Back-End Development**: Web developers handle the server-side logic, databases, and other technical aspects of web applications. They build the functionality that powers web applications.
6. **Speed and Performance Optimization**: They ensure that the website or web application loads quickly and efficiently to provide a seamless user experience.
7. **Web Accessibility**: They make sure the website or web application is accessible to all people, including those with disabilities, by following web accessibility guidelines.
8. **Content Integration**: They add and organize site content, such as text, images, videos, and other media, and ensure that dynamic content is displayed correctly in web applications.
9. **Testing and Troubleshooting**: They conduct thorough testing to identify and fix display and functionality issues in different browsers and devices. Web developers also troubleshoot and resolve technical issues.
10. **Maintenance and Updates**: Web designers and developers are often involved in the ongoing maintenance of the site or web application, performing updates, fixes, and improvements.
11. **Collaboration**: They work closely with each other and other professionals to ensure effective implementation of the design and functionality.
12. **Trends and Evolution**: They stay updated with the latest web design and web application development trends and emerging technologies.