What is web scraping change tracking?

Automated systems capture page content at regular intervals, compare it against the previously stored version, and notify you when differences appear.

Common use cases

• Price monitoring: Catch competitor pricing changes as they happen
• Stock alerts: Get notified when out-of-stock items become available
• Content updates: Track news publications or regulatory changes
• Job postings: Watch for newly listed positions

How it works

1. An initial scrape establishes the baseline
2. Scheduled scrapes capture the current state
3. A comparison identifies any differences
4. Detected changes trigger configured actions

Olostep's changeTracking format returns structured diffs automatically—no custom comparison logic needed on your end.

Key Takeaways

Change tracking elevates scraping from a one-time data pull to continuous monitoring, giving you real-time awareness of what's changing across the web.