FetchTheChange
A reliable website change-monitoring tool.
What it does
FetchTheChange monitors any value on a page (not just prices) and—when a selector stops matching—helps you recover instead of failing silently. Key features: - Works on modern, JavaScript-heavy sites - Monitors any value (prices, availability, metrics, text, status messages) - Shows clear failure states (e.g. “selector missing” vs “blocked”) Includes a built-in “Fix Selector” helper that suggests working selectors
Does a similar job
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- IBI built a tool that watches webpages and exposes changes as RSSMar 2026 · sitespy.app · ▲320
I built Site Spy after missing a visa appointment slot because a government page changed and I didn’t notice for two weeks. It watches webpages for changes and shows the result like a diff. The part I think HN might find interesting is that it can monitor a specific element on a page, not just the whole page, and it can expose changes as RSS feeds. So instead of tracking an entire noisy page, you can watch just a price, a stock status, a headline, or a specific content block. When it changes, you can inspect the diff, browse the snapshot history, or follow the updates in an RSS reader. It’s…
- CIChangedetection.io detect changes in websites and JSON feeds2022 · github.com · ▲147
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