Stop finding broken pages after your customers do — finally know what changed and why it matters.
PageSentinel is a website change monitoring tool that detects visual, structural, and content changes across the pages you care about. Catch website defacement, page change detection issues, policy updates, pricing changes, broken layouts, and silent redirects with fewer false positives and a clear audit trail.
See website change monitoring in action
Watch how PageSentinel detects changes, explains what happened, and shows the proof you need to act fast.
How PageSentinel works
Three steps to monitor website changes, reduce noise, and catch the issues that actually matter.
Use cases for website change monitoring
Same engine. Different workflows for agencies, WordPress sites, ecommerce teams, and compliance monitoring.
Agency website change monitoring
- ✓ Monitor client sites after plugin/theme updates
- ✓ Prove “when it changed” with a clean audit trail
- ✓ White‑label reporting (coming soon)
WordPress website change monitoring
- ✓ Catch broken layouts after updates
- ✓ Detect unexpected content deletions
- ✓ Spot malicious injections and redirects
Competitor website monitoring for ecommerce
- ✓ Monitor key product pages and checkout steps
- ✓ Catch policy or shipping changes
- ✓ Audit trail for revenue‑impacting edits
Website defacement monitoring and compliance
- ✓ Track policy/legal pages for changes
- ✓ Alerts for unauthorized edits
- ✓ Exportable history (coming soon)
Trusted by agencies and site owners who cannot afford surprises
Real-world problems. Faster detection. More confidence when something changes.
“Caught a redirect injection within minutes. Saved us from a very bad day.”
“An update broke the homepage for 2 days. Now we know immediately and can roll back fast.”
Simple pricing for website change monitoring
Plans include scan credits every 30 days so you can monitor website changes across the URLs that matter most.
Starter
- 10,000 scans / month
- Frequencies: Daily, Weekly, Monthly
Pro
- 50,000 scans / month
- Frequencies: Hourly, Daily, Weekly, Monthly
Business
- 200,000 scans / month
- Frequencies: Every 30m, Hourly, Daily, Weekly, Monthly
Agency
- 500,000 scans / month
- Frequencies: Every 15m, 30m, Hourly, Daily, Weekly, Monthly
FAQ
Quick answers about website change monitoring, alerts, and how PageSentinel works.
What is website change monitoring?
Website change monitoring is the process of checking important web pages for visual, content, structural, pricing, policy, or redirect changes and alerting you when something important changes.
How does website change monitoring work?
PageSentinel scans the URLs you choose on the schedule you set, compares the current page against the previous version, and shows you what changed with a clear audit trail and evidence.
What is the difference between website monitoring and website change monitoring?
Website monitoring often focuses on uptime and performance. Website change monitoring focuses on what changed on the page itself, including layout breaks, text changes, pricing updates, policy edits, suspicious injections, and redirects.
What are scan credits?
Each time PageSentinel scans a URL, it uses 1 credit. Your plan includes a monthly pool of credits you can spend across all monitored URLs.
When do credits reset?
Credits reset every 30 days based on your subscription cycle.
What happens if I run out of credits?
By default, scanning pauses until your next reset. For approved accounts, overages can be enabled and billed automatically.
Can I set different frequencies for different pages?
Yes. Set a default frequency at the domain level and override individual URLs — scan your homepage often and your terms page weekly or monthly.
Where do alerts go?
Email alerts are included.
Can PageSentinel detect visual website changes?
Yes. PageSentinel is built to detect visual, content, and structural changes so you can catch broken layouts, missing sections, unexpected page edits, and other changes your team would actually notice.
Can PageSentinel detect website defacement or malicious redirects?
Yes. PageSentinel helps teams detect suspicious content changes, defacement, spam injections, and redirects so they can respond before customers or clients discover the problem.
Can I monitor competitor website changes?
Yes. You can monitor competitor pricing pages, product listings, policy pages, and other key URLs to track updates over time with alert history and before/after evidence.
What IPs should I allowlist (whitelist) if my site blocks scans?
If your site uses a WAF or protection service (like Cloudflare) and blocks PageSentinel, allowlist these scanner IP addresses:
116.202.52.117
2a01:4f8:231:369b::2