Web Change Monitor
Detects changes in web page content and visuals. Useful for monitoring changes to pricing pages, terms of service, competitor sites, and more.
Check Types
Section titled “Check Types”The Web Change monitor has 3 check types.
| Check Type | Description | Plan |
|---|---|---|
| Text Content | Hash comparison of page text content | All plans |
| Screenshot | Hash comparison of page screenshots | Pro / Business |
| Text + Screenshot | Comparison of both text and screenshots | Pro / Business |
Configuration
Section titled “Configuration”| Field | Description | Required | Default |
|---|---|---|---|
| URL | Target URL (HTTP/HTTPS) | Yes | - |
| Check Type | Detection method (Text / Screenshot / Both) | Yes | Text |
| CSS Selector | Element for text extraction | Required for Text / Both | - |
| Change Mode | Behavior on change detection (tamper / track) | No | tamper |
Change Mode
Section titled “Change Mode”Configures how the monitor behaves when a change is detected.
| Mode | Behavior | Use Case |
|---|---|---|
tamper | Creates an incident on change detection (default) | Tamper detection, critical page change alerts |
track | Records the change only. No incident is created | Competitor monitoring, periodic change history tracking |
In track mode, the monitor status remains “up” even when changes are detected. Changes are saved as snapshots and can be reviewed in the Before/After view on the dashboard.
Text Content Detection
Section titled “Text Content Detection”Fetches the page at the specified URL and extracts text content from the element specified by the CSS Selector. Compares the SHA-256 hash of the text with the previous check result, and creates an incident if changes are detected.
The CSS Selector uses simple tag-name-based matching. Specifying body compares the entire page text.
Screenshot Detection
Section titled “Screenshot Detection”Uses the Cloudflare Browser Rendering API to render the page and capture a screenshot (PNG, 1280x720). Compares the SHA-256 hash of the screenshot with the previous one to detect visual changes.
Screenshots are stored in R2 and can be viewed in the Before/After view on the dashboard.
Before/After View
Section titled “Before/After View”When a screenshot monitor detects changes, you can view the Before (previous) and After (current) screenshots side by side on the monitor detail page in the dashboard.
Plan Limits
Section titled “Plan Limits”| Free | Pro | Business | |
|---|---|---|---|
| Text monitors | Available | Available | Available |
| Screenshot monitors | Not available | Up to 3 | Up to 10 |
| Minimum check interval (Text) | 300 seconds (5 min) | 180 seconds (3 min) | 60 seconds (1 min) |
| Minimum check interval (Screenshot) | - | 1800 seconds (30 min) | 900 seconds (15 min) |
| Screenshot retention | - | 90 days | 90 days |