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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