Every product team, developer, and researcher has a version of the same ritual: open a handful of tabs in the morning, hit refresh a few times, close the ones that look the same, and repeat tomorrow. It is manual, time-consuming, and you will miss something. A competitor changes pricing. A job board posts the role you've been waiting for. A vendor quietly revises their terms.
Diffwatch exists to make that ritual obsolete. Drop a URL, get an AI summary when something actually changes. That's it.
What Diffwatch does
You submit a URL. Diffwatch fetches it on a schedule, compares the content against a baseline, and — if something meaningful changed — emails you a plain-English summary of what happened. Not a raw diff dump. Not a screenshot. An intelligent breakdown of the change so you can decide what to do in seconds.
You can watch any page: pricing pages, job listings, terms of service, product changelogs, government RFPs, competitor landing pages. You can target specific content with CSS selectors or XPath, so you're not alerted on layout tweaks — only actual content changes.
What's in this launch
We've shipped a full platform, not a prototype. Here's what's live:
Integrations
Zapier, Make, n8n, Webhooks, and a REST API — connect Diffwatch to any workflow without writing code.
Public REST API
Programmatic access to create, list, pause, and delete watches. Full key management from your dashboard.
Live /changes wall
A public feed of real changes from real watches — scroll to see what's happening on the web right now.
Per-domain showcase
Browse changes by domain. See what people are watching across the web — and why it matters.
6 use-case pages
SEO-optimized landing pages for pricing monitoring, job boards, ToS tracking, product launches, stock availability, and government RFPs.
One-click bookmarklet
Drag the bookmarklet to your toolbar. Click it on any page to instantly set up monitoring — no copy-paste required.
The /changes wall — live, public, real
The most unique thing Diffwatch does is surface the changes it's detecting in real time. The /changes wall is a public, reverse-chronological feed of every significant change from showcase watches — pricing shifts, product announcement updates, policy revisions. Filter by category (Pricing, Product, Policy, Other), or drill into a specific domain to see the full change history for that site.
Each change gets its own permanent URL (/changes/:id) with an OG image, a full diff, and share buttons. Share a competitor's pricing change with your team in one click. The permalink is the canonical source — search engines index it, and the link will be stable.
Build on top of Diffwatch
The public REST API gives you full control: create and manage watches, fetch change history, and integrate into existing tooling. Authentication is API-key-based. Keys are created and revoked from the dashboard. Rate limits are generous — 60 requests/minute on Pro plans, 200 on Business.
No code? Zapier and Make integrations mean Diffwatch slots into existing workflows without touching a single endpoint. Get a Slack message when a competitor changes their pricing. Add a row to a Google Sheet when a government RFP appears. Your ops stack, powered by change detection.
The bookmarklet changes everything
The hardest part of monitoring a site is the setup: copy the URL, paste it somewhere, configure the settings. The bookmarklet eliminates that friction. Drag it to your bookmarks bar, browse to any page, click it, and Diffwatch pre-fills the URL and opens the intake form with the right settings. You can even select text on the page to tell Diffwatch to watch specifically that section.
One click. Watched.
Get started
Monitoring is free to try. No credit card required. Drop a URL and we'll email you when something changes — or browse the live changes wall to see what's already being watched.