changedetection.ioBest and simplest tool for website change detection, web page monitoring, and website change alerts. Perfect for tracking content changes, price drops, restock alerts, and website defacement monitoring—all for free or enjoy our SaaS plan!

changedetection.io

The simplest and most powerful tool for monitoring website changes in real time. Get instant notifications via Discord, Email, Slack, Telegram, Webhooks and more whenever your tracked pages change. Perfect for price monitoring, restock alerts, and detecting content updates without relying on third-party services.

Key Features

• Visual Selector Tool: Target specific parts of webpages to monitor, ignoring irrelevant content changes
• Interactive Browser Steps: Log in, fill forms, click buttons, and perform actions before detecting changes
• Price & Restock Detection: Automatically extract product pricing and inventory metadata with customizable alert thresholds
• Multiple Notification Channels: Send alerts via Discord, Email, Slack, Telegram, Webhooks, RSS feeds and more
• Detailed Change Visualization: View changes by word, line, or character with contextual diffs
• JSON API Monitoring: Track API responses and trigger custom actions based on changes

Use Cases

• Price Monitoring: Track product prices across e-commerce sites and get alerts on drops
• Restock Notifications: Know instantly when out-of-stock items become available again
• Job Board Tracking: Monitor career pages and job portals for new positions matching your skills
• Regulatory Compliance: Stay updated on governmental and regulatory changes published online
• Website Defacement Detection: Strengthen security monitoring by detecting unexpected HTML changes
• Content Updates: Track news sites, university announcements, and document changes

Who Is It For

Ideal for price hunters, job seekers, e-commerce resellers, security teams, and compliance officers who need reliable website monitoring without expensive SaaS subscriptions. Both self-hosted deployment and managed hosting options are available.