changedetection.io
Operator: Web Technologies s.r.o.
Free software for monitoring web page changes, with filters, notifications and a REST API.
Monitoring
When external AI analysis is enabled, page changes and extracted text are sent to the selected AI provider.
Product
Availability and source date
As of: 17 October 2026.
No functionality test has been performed.
Use in OSINT research
Monitors selected web pages, search results and JSON endpoints for changes. Filters restrict monitoring to relevant page sections or passages of text.
Queries
| Input | Result | Result type |
|---|---|---|
| URL | Changed text or JSON values compared with the previous version, plus notifications for matching changes. | Retrieved |
Features
- Compares web pages and shows changes by word, line or character.
- Monitors selected sections using CSS, XPath, JSONPath or jq.
- Performs browser steps before checking, such as a search or sign-in.
- Sends notifications through email, Slack, Telegram, Discord or webhooks.
- Manages monitored URLs, groups and histories through a REST API.
- Provides optional AI rules and summaries through external models or local models such as Ollama.
Categories
- Monitoring
Coverage
Dataset
Access
Installation and deployment
Locally through Pip or on your own server with Docker. The Chrome extension adds URLs to an existing installation. At the time of review, optional official cloud hosting costs €9.52 per month and includes up to 5,000 URLs.
Requirements
Export
Provider
Country of establishment
Interfaces
API
MCP
AI agents
Maintenance
Licence
Latest activity
Stars
Legal note
Limitations
- Browser steps require a Chrome-based browser service.
- External AI models may incur additional API costs.
Guides and practical reports
Official · README: installation, filters, browser steps and notifications
changedetection.io-Projekt · EN
Describes local installation, Docker deployment and monitoring configuration.