HTML Tutorial

Web Performance

Practical Steps:

  1. Optimize Images:
    • Use the correct image format (e.g., JPEG for photos, PNG for graphics).
    • Compress images without compromising quality using tools like TinyPNG.
  2. Minimize CSS and JavaScript:
    • Remove unused code and styles.
    • Concatenate multiple CSS/JavaScript files into one.
    • Minify code to reduce file size.
  3. Lazy Load:
    • Load images and other content only when users scroll down to them.
    • Use the HTML <picture> element for responsive images.

HTML Example: Improving Web Performance

<img src="optimized.jpg" loading="lazy" alt="Optimized Image" width="300" height="200">
  • loading="lazy": Lazy loads the image.
  • alt="Optimized Image": Provides accessibility for screen readers.

Accessibility and Ease of Use:

  • Use semantic HTML tags: Describe content using tags like <header>, <main>, and <footer>.
  • Provide clear focus states: Use keyboard-accessible tab order and make interactive elements visible when focused.
  • Use contrasting colors: Ensure text and background colors are distinct to enhance readability.
  • Add text resizing support: Allow users to increase or decrease font size.
  • Test with assistive technologies: Use tools like screen readers and keyboard emulators to ensure accessibility.