Know when a page changes.
Without checking it.
DiffWatch watches any web page or endpoint you care about and emails you a clean diff the moment it changes — prices, filings, listings, docs, competitor pages.
Three steps, then forget about it
No browser extension, no dashboard to babysit. It runs on our server and only speaks when something actually changes.
Paste a URL
Optionally add a CSS selector like #pricing to watch just one part of the page.
We watch on schedule
Every hour on the free plan, every 15 minutes on Pro. Content is normalized so rotating ads and timestamps don't trigger noise.
You get a diff
An email with exactly the added and removed lines, linking straight to the page.
Built for anyone who refreshes a page for work
If you check the same page more than once a week, DiffWatch should be checking it for you.
Competitor & supplier pricing
Know the moment a price, plan, or stock status changes instead of finding out from a customer.
Filings, tenders & grants
Government portals rarely announce updates. Watch the results page and get the diff.
Listings, jobs & restocks
Catch a new listing or a back-in-stock page before everyone else does.
Terms, docs & changelogs
Track the pages that quietly change and affect your compliance or integration.
Simple pricing
Start free. Upgrade when you outgrow three pages or need faster checks.
- 3 monitored pages
- Checks every hour
- Email diff alerts
- CSS selector targeting
- 50 monitored pages
- Checks every 15 minutes
- Email diff alerts
- Priority checking
Questions
Do I need to install anything?
No. You paste a URL in the dashboard and we check it server-side.
Will it spam me when a page changes often?
Alerts fire only when the normalized content actually differs, and identical changes are not repeated. You can delete a monitor any time.
Can I watch a page behind a login or a JSON API?
Public pages and public JSON endpoints work today. Authenticated pages need a browser session and are on the roadmap — email us if that's your blocker.
Can I cancel?
Yes, any time, from the billing portal. Your account drops back to the free plan at the end of the period.