AI Summaries That Explain What Changed on a Web Page
A raw diff full of HTML tells you that something changed. An AI summary tells you what it means: 'Starter price increased from $29 to $39; SSO moved to Enterprise.'
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Free plan · 10 URLs · hourly checks · 2 AI summaries/mo · no credit card
Updated
- Liability cap reduced from 12 months of fees to 3 months
- New clause 9.4: vendor may use aggregated customer data for model training
How it works
A change is detected
Site Monitor sees the page's fingerprint change between two checks.
The AI compares versions
It reads the before and after content (or just your selected element) and identifies what was added, removed, or reworded.
You get the summary
The summary appears in the AI Insights section of the site's dashboard. Your email alert links straight there.
You choose which alerts each URL sends — downtime, content changes, slow responses — and we email you when they happen.
What summaries are good at
- Price and plan changes
- New, removed, or reworded legal clauses
- Added and removed list items (events, jobs, products)
- Date and deadline changes
- Documentation and changelog updates
Why summaries beat diffs
Diffs are noisy: a re-ordered list or a changed CSS class can produce hundreds of lines. A summary focuses on the human-meaningful change, so you can decide in seconds whether it needs your attention.
The Free plan includes 2 AI summaries a month — enough to see how they work. Paid plans include more for higher-volume monitoring.
Frequently asked questions
What is an AI change summary?
When a page changes significantly, Site Monitor uses AI to describe in plain English what was added, removed, or reworded. Summaries appear in the site's dashboard — your email alert links straight there. The Free plan includes 2 AI summaries a month; paid plans include more.
Does every change get a summary?
Summaries are generated for significant changes. Very small edits still trigger an email alert but may not get a summary — unless you watch a specific element with a CSS selector, in which case any change to it is summarized (within your monthly allowance).
Is there a side-by-side diff?
Not currently. You see the AI summary and the time of each change; paid plans also keep screenshot history so you can compare how the page looked.
What happens when I run out of AI summaries?
Change detection keeps working and you still get an email alert for every change — new changes just won't get an AI summary until your allowance resets next month or you upgrade.
Will rotating ads, timestamps, or counters cause false alerts?
Not if you scope the watch. Add a CSS selector (for example #pricing or .event-list) and Site Monitor fingerprints only that element — everything else on the page is ignored. Whitespace-only changes never trigger an alert.
Is Site Monitor free?
Yes. The Free plan covers 10 URLs checked every hour, with 2 AI change summaries a month — no credit card required. Upgrade only if you need faster checks, more URLs, or more AI summaries.
How often does Site Monitor check a page?
Free checks every hour. Paid plans check as often as every 5 minutes, and you can set the interval per URL.
Start watching your first page
Start watching free → Explore the live demo
Free plan · 10 URLs · hourly checks · 2 AI summaries/mo · no credit card