@CycleDecoded: Many folks on X who are into price-drop monitoring, ticket grabbing, and deal hunting have been quietly using this tool. This killer GitHub project with 32.6k stars http://changedetection.io is basically a "global webpage watch plugin". Whether it's a price cut, stock replenishment, a silent webpage patch, ...
Summary
Introducing changedetection.io, an open-source webpage change monitoring tool that supports AI summaries, visual selection of monitored areas, multiple notification channels, and Docker private deployment.
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Cached at: 08/06/26, 10:43 PM
Many folks on X who track price drops, grab tickets, and scrape deals are quietly using this tool.
This powerful tool on GitHub, boasting a blistering 32.6k stars and available at http://changedetection.io, is basically a “web-wide page monitoring cheat.” Whether it’s a product price drop, a restock, a silent webpage patch, or a big shot’s Weibo/tweet getting deleted, the moment the page changes—even by a single character—it will push a notification to you instantly! The best part is that it now integrates AI (supporting GPT-4o-mini and local models like Ollama). Instead of rigidly reporting “the page changed,” it can directly summarize for you: “price dropped by 50 yuan” or “a new feature was added.” Write a natural-language rule to filter out all the noise—a dream come true for free-riders and automation enthusiasts.
Core Highlights:
- Visual box monitoring: click where you want to watch, automatically skipping ads and useless footers.
- AI smart noise-reduction summaries: connect free models to get only the change details you care about.
- Seamless notification channels: WeChat, DingTalk, Telegram, Discord, email—all covered.
- Automated click simulation: auto-login, auto-accept Cookie consent, auto-paginate monitoring.
- Supports local private deployment: one-click Docker setup, with full control of your data.
Basic Info:
- License: Apache-2.0
- GitHub repository: https://github.com/dgtlmoon/changedetection.io…
Website change detection, monitoring, alerts, notifications, restock alerts
Source: https://changedetection.io/
WebsiteChangeDetection ...For clever people
Monitor and detect website changes with alerts. Easily track website changes.
Loved by smart-shoppers, bargain-hunters, data-journalists and more. Now with intelligent product restock detection!
- $8.99/Month Easy Subscription Cancel anytime ‐ 5,000 URL watches included Receive your private cloud based web login details immediately after signup, let us watch web-pages for you in our browsers, nothing to install. Learn More (https://changedetection.io/#subscription)
85+ Notification formats supported!
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Monitor website changes with Website Change Detection
ChangeDetection.io helps you monitor and detect website changes, track web page monitoring, and detect updates automatically. Stay informed when web pages change with powerful website change detection tools.
Get Alerts
Monitor website changes and get alerts when web pages update. Choose from popular integrations like:
- Discord
- Slack
- Telegram
- Rocket.Chat
- Matrix
- NTFY
- Office 365
Explore allalert integrations here (https://github.com/caronc/apprise?tab=readme-ov-file#productivity-based-notifications). Unlimited alerts, Seriously cool integrations.
Target Elements
Select only what you need, easily choose elements to monitor.
Browser Steps
Perform searches, Log in with username and password, Add to cart, Interact with fields, buttons and many more possibilities.
Re-stock alerts
Monitor out-of-stock products and get alerts when those products are back in stock, get restock alerts via Discord, slack, email and many other platforms.
Perfect for finally getting that pair of shoes that’s sold out or that RaspberryPi that’s been unavailable!
Easy Subscription
Start watching immediately!
Follow that price! Get restock notifications! Know when something changed, don’t miss out! We monitor web page changes for you in the cloud, nothing to install.
- Login and Password sent to your email.
- Up to 5,000 URLs.
- Re-check times from 5~ minutes (per runner - with the ability to easily add more Chrome Browsers).
- Automatic updates, get new features continuously.
- Includes one realChrome Browserfor Javascript websites, bolt-on more browsers as required.
- Choose a virtual location - access to European , USA and Tor proxies included.
- Over 85 different notification types (Slack, Email, Discord and more)
- Includes Trigger Text, CSS/xPath Rules, Ignore Text and many more filters
- Import URLs as a list
- Official providerof thechangedetection.io opensource project (https://github.com/dgtlmoon/changedetection.io)
Only*$8.99/mo***Continue with Stripe and (https://changedetection.io/checkout?pagesource=frontpage)
Safe secure payment, cancel anytime. After signing up, you will receive an email from us with your login details, be sure to check your spam folders!
about-image
About the changedetection.io project
Changedetection.io is a fully opensource project, we rely on and financially support the libraries that we build on.
Our vision is to be the most dynamic and feature-filled way to monitor website changes, change notification and restock alert system, this can only be done with the help of the opensource community. We are simply the best way to monitor website changes.
We believe in sustainable opensource development by supporting our project with afantasticsubscription product.
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