page-monitoring
Installation
SKILL.md
Page monitoring methodology
Patterns for tracking web page changes, detecting content removal, and preserving important pages before they disappear.
Monitoring service comparison
Free-tier limits and retention windows shift annually — verify at the service's pricing page before relying on a specific number. The columns below reflect a 2026 snapshot.
| Service | Free Tier | Best For | History | Alert Speed |
|---|---|---|---|---|
| Visualping | A few daily checks (free plan tightened in recent years) | Visual changes | Standard | Minutes |
| ChangeTower | Yes (verify current limits) | Compliance, archiving | Multi-year on paid plans | Minutes |
| Distill.io | ~5 monitors with 7-day history | Element-level tracking | Limited on free tier | Seconds |
| Wachete | Limited | Login-protected pages | 12 months | Minutes |
| UptimeRobot | 50 monitors at 5-minute intervals (free SMS removed) | Uptime only | 60 days | 5-min checks |
| changedetection.io | Self-hosted; free | Privacy / DIY | Disk space | Configurable |
| urlwatch | Self-hosted; free | Cron-driven CLI | Configurable | Configurable |