Here are 15 digital products that web designers can create:

1. Website Templates

• What it is: Ready-to-use, customizable HTML/CSS or WordPress templates that other designers or businesses can use to quickly set up websites.
• Why it works: Many small businesses, bloggers, and startup entrepreneurs are looking for affordable and efficient ways to launch their websites.
• Where to sell: ThemeForest, TemplateMonster, Creative Market.

2. UI Kits

• What it is: A collection of pre-designed user interface components (buttons, forms, icons, navigation, etc.) that help developers build websites and apps faster.
• Why it works: Developers and designers often need a set of cohesive components that they can customize and implement into their own designs.
• Where to sell: UI8, Envato Elements, Creative Market.

3. Icons and Icon Sets

• What it is: A collection of vector icons for web and app interfaces, available in various formats (SVG, PNG, etc.).
• Why it works: Icons are essential for any modern design and are frequently needed by designers and developers for their projects.
• Where to sell: Iconfinder, Flaticon, Creative Market.

4. WordPress Themes

• What it is: Pre-designed themes specifically for WordPress websites, including customizable layouts and features.
• Why it works: WordPress is one of the most popular platforms, and many users seek high-quality, customizable themes for their websites.
• Where to sell: ThemeForest, Mojo Marketplace, WordPress.org.

5. Logo Designs and Logo Templates

• What it is: Custom logos or ready-to-edit logo templates that can be adapted for various businesses or brands.
• Why it works: Many small businesses, startups, and entrepreneurs need an affordable logo design solution.
• Where to sell: 99designs, DesignCrowd, Creative Market.

6. Website and App Wireframe Kits

• What it is: Pre-designed wireframes for websites and apps, which can be customized to suit different projects.
• Why it works: Wireframes are often needed to present initial ideas to clients or stakeholders, and having ready-made kits can speed up the design process.
• Where to sell: UI8, Creative Market, Gumroad.

7. CSS Animations and Effects

• What it is: Custom-built CSS animations or transition effects that can be easily integrated into websites.
• Why it works: Animations add visual appeal to websites and can improve the user experience (UX), making your digital product highly desirable for designers and developers.
• Where to sell: CodeCanyon, Creative Market, GitHub.

8. Web and Mobile App Prototypes

• What it is: High-fidelity prototypes of websites or mobile apps that simulate the user experience (UX).
• Why it works: Developers, marketers, and other designers use prototypes to present concepts before full development begins.
• Where to sell: InVision, UXPin, Dribbble.

9. E-Commerce Store Themes

• What it is: E-commerce-specific themes for platforms like Shopify, WooCommerce, or BigCommerce.
• Why it works: E-commerce businesses need functional, attractive, and user-friendly online store designs.
• Where to sell: Shopify Theme Store, ThemeForest, TemplateMonster.

10. Stock Photography

• What it is: High-quality images that can be used in web design, blogs, marketing materials, etc.
• Why it works: Many web designers and businesses are on the lookout for quality stock photography for their projects.
• Where to sell: Shutterstock, Adobe Stock, Unsplash (with licensing).

11. Fonts and Typography Sets

• What it is: Custom fonts and typography sets for web and app design.
• Why it works: Good typography is key to an appealing and readable website. Many designers look for unique or high-quality font sets to elevate their work.
• Where to sell: MyFonts, Font Squirrel, Creative Market.

12. Content Management System (CMS) Plugins

• What it is: Custom plugins for popular CMS platforms like WordPress, Joomla, or Drupal that add functionality to websites.
• Why it works: Many website owners are looking for specific functionalities (e.g., SEO tools, security features, or contact forms).
• Where to sell: CodeCanyon, WordPress Plugin Repository.

13. E-books on Web Design

• What it is: Educational digital books about web design best practices, coding tutorials, UX/UI principles, etc.
• Why it works: Aspiring web designers or developers are always looking for resources to improve their skills and knowledge.
• Where to sell: Amazon Kindle, Gumroad, LeanPub.

14. Web Design Course and Tutorials

• What it is: Video tutorials or online courses on various web design topics, from basic HTML and CSS to advanced UX/UI principles.
• Why it works: There is a large demand for educational content on web design, and it can be a great way to share your expertise and build a reputation.
• Where to sell: Udemy, Skillshare, Teachable.

15. Design System Kits

• What it is: A comprehensive collection of reusable components, patterns, and guidelines that help design teams create consistent and efficient digital products.
• Why it works: Large companies and teams are always looking to streamline their design process, and a pre-built design system can save a lot of time.
• Where to sell: UI8, Sketch, Figma Community.