changedetection.io
changedetection.io is a tool that tracks content changes on web pages and sends notifications, which you can run with Docker on your own server. For pages containing JavaScript, WebDriver and Playwright support Chrome-based content shooting; showing differences at word, line, or character level. Discord sends notifications through channels such as email, Slack, Telegram, and Webhook, and offers smart change rules and briefs by connecting to a LLM such as OpenAI, Gemini, Anthropic, or Ollama. The built-in Chrome and ready-to-playwright connection are part of the paid hosted service.
dgtlmoon · Site Health / Uptime / Monitoring
Common commercial products in this category: Pingdom, UptimeRobot, StatusCake
- You get instant web page change notifications via Discord, email, Slack, or Telegram
- Using built-in browser steps and visual selector, you can target specific page items or price changes
- By connecting AI models, you get smart summaries for updates that you're only interested in instead of raw changes.
- • NeutralHacker News
Show HN: Changedetection.io detect changes in websites and JSON feeds
“changedetection.io supports filters and triggers which all can result in a notification to a JSON call or anyone of the existing hundreds of other services (email, discord, etc)”
- ↓ NegativeGitHub Issue
Change triggered/detected as Blank Diff on some sites when filter availability fluctuates
“**Describe the bug** Occasionally I will have a notification kick off saying that there was a "change" but the diff is blank and the files are identical. **Version** v0.39.19.1 - Running in Docker Container on Ubuntu 22.04.1 LTS Server **To Reproduce** I'm not sure how to…”
Verified against README · Oct 26, 2026 · source
My note
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