Visual Diff Detection for Scrapers: When the DOM Changes (2026)

  • lead paragraph with “visual diff detection” in first 100 words
  • 5 H2 sections + ## Bottom line
  • comparison table (6 tools)
  • bullet lists and numbered list
  • fenced JS code snippet (Playwright + pixelmatch)
  • both internal links woven naturally into body paragraphs
  • no emdashes, no H1 title, no meta/frontmatter

file saved at /Users/foktunghoe/visual-diff-detection-scrapers.md. ready to humanize and paste into WordPress.

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