DiffSpot monitors web pages and notifies you when something changes — all running locally in your browser. No cloud, no account required.
Install from Chrome Web StoreClick on the exact part of a page you want to monitor. No need to write selectors manually.
See exactly what changed with highlighted additions and deletions. Filter by sensitivity or keywords.
Pages are fetched silently using Chrome's Offscreen API. No background tabs opening and disrupting your work.
Your monitored URLs and data never leave your browser. No external servers, no tracking.
Only get notified when specific words appear or disappear. Ignore noisy sections like ads and timestamps.
Back up your monitoring jobs and move them between browsers with JSON export/import.
Get started in seconds — no account, no credit card.