changedetection.io

Web Site Change Detection, Monitoring and Notification.

Live your data-life pro-actively, track website content changes and receive notifications via Discord, Email, Slack, Telegram and 70+ more

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Target specific parts of the webpage using the Visual Selector tool.

Available when connected to a playwright content fetcher (included as part of our subscription service)

Easily see what changed, examine by word, line, or individual character.

Perform interactive browser steps

Fill in text boxes, click buttons and more, setup your changedetection scenario.

Using the Browser Steps configuration, add basic steps before performing change detection, such as logging into websites, adding a product to a cart, accept cookie logins, entering dates and refining searches.

After Browser Steps have been run, then visit the Visual Selector tab to refine the content you're interested in. Requires Playwright to be enabled.

Example use cases

• Products and services have a change in pricing
• Out of stock notification and Back In stock notification
• Monitor and track PDF file changes, know when a PDF file has text changes.
• Governmental department updates (changes are often only on their websites)
• New software releases, security advisories when you're not on their mailing list.
• Festivals with changes
• Discogs restock alerts and monitoring
• Realestate listing changes
• Know when your favourite whiskey is on sale, or other special deals are announced before anyone else
• COVID related news from government websites
• University/organisation news from their website
• Detect and monitor changes in JSON API responses
• JSON API monitoring and alerting
• Changes in legal and other documents
• Trigger API calls via notifications when text appears on a website
• Glue together APIs using the JSON filter and JSON notifications
• Create RSS feeds based on changes in web content
• Monitor HTML source code for unexpected changes, strengthen your PCI compliance
• You have a very sensitive list of URLs to watch and you do not want to use the paid alternatives. (Remember, you are the product)
• Get notified when certain keywords appear in Twitter search results
• Proactively search for jobs, get notified when companies update their careers page, search job portals for keywords.
• Get alerts when new job positions are open on Bamboo HR and other job platforms
• Website defacement monitoring
• Pokémon Card Restock Tracker / Pokémon TCG Tracker
• RegTech - stay ahead of regulatory changes, regulatory compliance

Need an actual Chrome runner with Javascript support? We support fetching via WebDriver and Playwright!

Key Features

• Lots of trigger filters, such as "Trigger on text", "Remove text by selector", "Ignore text", "Extract text", also using regular-expressions!
• Target elements with xPath(1.0) and CSS Selectors, Easily monitor complex JSON with JSONPath or jq
• Switch between fast non-JS and Chrome JS based "fetchers"
• Track changes in PDF files (Monitor text changed in the PDF, Also monitor PDF filesize and checksums)
• Easily specify how often a site should be checked
• Execute JS before extracting text (Good for logging in, see examples in the UI!)
• Override Request Headers, Specify POST or GET and other methods
• Use the "Visual Selector" to help target specific elements
• Configurable proxy per watch
• Send a screenshot with the notification when a change is detected in the web page

We recommend and use Bright Data global proxy services, Bright Data will match any first deposit up to $100 using our signup link.

Oxylabs is also an excellent proxy provider and well worth using, they offer Residental, ISP, Rotating and many other proxy types to suit your project.

Please ⭐ star ⭐ this project and help it grow! https://github.com/dgtlmoon/changedetection.io/

$ pip3 install changedetection.io

Specify a target for the datastore path with -d (required) and a listening port with -p (defaults to 5000)

$ changedetection.io -d /path/to/empty/data/dir -p 5000

Then visit http://127.0.0.1:5000 , You should now be able to access the UI.

See https://changedetection.io for more information.