Glossary · May 2026
What is Web Change Detection?
Web change detection is the automated practice of monitoring a specific URL or web page and alerting when its content changes, visually, structurally, or semantically.
Long definition
Change detection tools historically used visual diffs (screenshot comparison) or DOM diffs (HTML tree comparison). Modern tools add semantic diffs, using AI to determine whether the change is meaningful (a price went from $9 to $19) or cosmetic (a marketing tagline was reworded). Use cases: pricing-page monitoring, legal-disclaimer monitoring, terms-of-service monitoring, competitor-changelog monitoring, government-page monitoring.
Examples
- Monitoring a competitor's /pricing page and getting alerted when actual tiers change.
- Monitoring a vendor's status page and getting alerted on incidents.
- Monitoring a government regulation page for revisions.
How Ayewatch handles it
AyeWatch supports URL-level web change detection alongside topic monitoring. The AI describes what specifically changed so users skim a summary instead of a raw diff. ASAP checks (Pro+) catch changes as soon as they happen.
Monitor Web Change Detection across 1B+ sources.
Set up an AI monitoring topic in 60 seconds. Free, no credit card.
Start free