PageRadar

PageRadar watches web pages and tells you when they change — by email, Telegram, Slack, webhook or RSS — with a visual diff of exactly what changed and a one-line summary in the alert.

Paste a URL and you are done; pick a single element with the visual picker if you only care about one part of the page. Typical uses: a competitor’s pricing page, a product going back in stock or dropping in price, a job or grant listing, a supplier’s terms or a docs page being edited.

For technical users there is a REST API, an MCP server for AI agents, signed webhooks and RSS feeds — all included from the $7 plan, not hidden behind an enterprise tier. No browser extension or self-hosting needed: checks run in the cloud with a real browser.