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HTML Best Practices

5 min read
Always add alt to images, label all form inputs, use semantic HTML, maintain heading hierarchy, ensure 4.5:1 colour contrast for text, and make all interactive elements accessible with keyboard navigation only.

HTML Best Practices

  • Always declare <!DOCTYPE html>
  • Set lang attribute on <html>
  • Use semantic elements — not divs for everything
  • Every image needs descriptive alt text
  • Always pair labels with inputs
  • Use relative units for text, not fixed pixels
  • Validate HTML at validator.w3.org
  • Load scripts with defer