Detect changes across an entire webpage
Monitor text or HTML across an entire public page without choosing one element first.
Stay on top of changes without checking manually
Whole-page monitoring compares the page body from one successful check to the next. It is useful when the relevant information can appear in different places, but it is broader—and potentially noisier—than selecting one stable section.
How it works in MonitorCat
Enter the page URL
Choose Page Change; no element selection is required for this monitor type.
Choose what counts as change
Monitor visible text, page HTML or both based on the kind of edit you need to detect.
Set the check interval
Choose an available schedule and let MonitorCat establish the first comparison baseline.
Inspect detected changes
Use the email alert and recent-check history to return to the source page and assess what changed.
Everything you need to review a change
No selection required
Monitor the page body without predicting which individual element will contain the next update.
Text or HTML comparison
Compare readable text, the more sensitive page HTML, or both.
Recent check history
Recent checks distinguish detected changes, no-change results and crawl errors.
Scope and limitations
Whole-page monitoring can react to legitimate but irrelevant edits such as rotating recommendations, timestamps or navigation changes. It does not visually highlight every changed DOM node. When one stable section contains everything you need, selected-content monitoring is usually the more precise choice.
Common questions
Does this visually diff two screenshots?
No. The monitor compares page text and/or HTML. Captured screenshots provide context for runs, but MonitorCat is not presented as a pixel-by-pixel visual-diff tool.
Can I reduce noisy alerts?
If the relevant content has a stable location, switch to selected-content monitoring and watch only that element.
Compare other monitor types
Price changes
Select a displayed product price, schedule checks and receive an email when MonitorCat detects that the price has changed.
Learn moreSelected content
Receive scheduled email alerts when selected text or HTML on a public webpage changes.
Learn morePage availability
Schedule lightweight checks for a public page and receive an email when MonitorCat detects a transition to a down state.
Learn moreStart monitoring a webpage today
Monitor a public webpage on a schedule and receive email alerts when the selected price or content changes.
Try It Free