Monitor any web page for changes
Fetch any URL, strip tags, collapse whitespace, hash the normalized text. When the hash changes, you get a webhook with the diff snippet — so you see what actually moved, not just "something changed."
Get 250 free creditsThe URL Watch process
- You provide a URL and optional webhook endpoint
- We fetch and normalize the page content (strip tags, collapse whitespace)
- We compute a hash of the normalized content
- On subsequent checks, we compare the new hash to the stored one
- If the hash differs, we calculate the diff and send it to your webhook
- You're charged only when we successfully deliver results
Who uses URL Watch
API Monitoring
Monitor API documentation, status pages, or changelogs for updates that might affect your integrations.
Competitive Intelligence
Track competitor pricing pages, product listings, or press releases for strategic insights.
Content Change Detection
Monitor legal documents, regulatory updates, or corporate announcements for important changes.
Availability Monitoring
Check if critical websites or services are online and responding correctly.
What you'll receive
"url": "https://example.com/changelog",
"timestamp": "2026-10-16T14:30:00Z",
"previous_hash": "a1b2c3d4...",
"current_hash": "e5f6g7h8...",
"diff": "@@ -10,7 +10,7 @@
- Version 2.1.0 (October 1, 2026)
+ Version 2.2.0 (October 16, 2026)
- Added new REST endpoint for user management
- Improved performance of database queries
- Fixed security vulnerability in auth middleware",
"snippet": "## [2.2.0] - 2026-10-16
### Added
- New REST endpoint for user management
### Improved
- Performance of database queries
### Fixed
- Security vulnerability in auth middleware"
}
Verifiable pricing
Every URL Watch operation is recorded on a public ledger accessible at /ticker. This provides transparent, verifiable usage tracking without requiring accounts or personal information.