A webmaster is also known as a website administrator or web administrator, responsible for the management and upkeep of performance on the website. Some of the main key responsibilities a webmaster or website administrator should possess or be involved in are portrayed below.

Key Responsibilities:

1. Website Design and Development: Creation, designing, and updating of website content, layout, and features.

2. Website Maintenance: Assurance in website uptime, performance, and security.

3. Content Management: Creation, editing, and publication of content.

4. Search Engine Optimization: Improvement in websites for better visibility and ranking.

5. User Experience UX: Enhancing the usability and accessibility of your website.

6. Technical Support: Website troubleshooting and support.

7. Analytics and Reporting: Web traffic, performance monitoring, and metrics.

8. Security and Backup: Prevention from hacking, malware, data loss.

9. Updates and Upgrades: New technologies, new features implementation.

10. Compliance: Legal and regulatory requirements, standards.

Specialized Roles:

1. Front-end Developer: Client-side development-per se-deals with HTML, CSS, and JavaScript.

2. Back-end Developer: The back-end of development is handled, including PHP, Python, and Ruby, among other languages.

3. Full-stack Developer: Concerned with the proper execution of both front-end and back-end development.

4. Web Architect: Responsible for designing the architecture of the website, including infrastructure and information architecture.

5. UX/UI Designer: Creates user-centered design solutions.

6. Conversion Rate Optimizer (CRO): Enhances the website conversion through testing.

7. Digital Marketing Specialist: Creates and executes an online marketing strategy.

Skills and Qualities:

1. Knowledge of web development languages such as HTML, CSS, and JavaScript, among others.

2. Knowledge in Content Management Systems such as WordPress, Drupal, etc.

3. Understanding of SEO principles and best practices.

4. Strong problem-solving ability and analysis.

5. Good communication and teamwork skills.

6. Adaptability and continuous learning.

7. Attention to detail and quality assurance.

Tools and Software:

1. Web development frameworks like React, Angular, and Vue.js.

2. Knowledge of CMS platforms such as WordPress, Joomla, Magento, etc.

3. SEO tools: Google Analytics, SEMrush, Ahrefs.

4. Graphic designing software: Adobe Creative Cloud.

5. Version control system: Git, SVN.

6. Website builders: Wix, Squarespace.

7. Project management tools: Asana, Trello, Jira.

Certifications and Trainings:

1. Web development certifications: HTML, CSS, JavaScript.

2. CMS certifications: WordPress, Drupal.

3. SEO certifications: Google Analytics, HubSpot.

4. Digital marketing certifications: Google Ads, Facebook Blueprint.

5. Online courses and tutorials: Udemy, Coursera, Codecademy.

The webmaster's role is very important in ensuring the integrity, usability, and performance of a website.