Detect Website Changes Automatically — Monitor Web Page Changes in Real Time

Monitor websites for updates — get notified via Discord, Email, Slack, Telegram, Webhook and many more — Ideal for monitoring price changes, content edits, conditional changes, LLM Change summaries and triggers just to name few features.

Get started with website page change monitoring straight away. Don't have time? Try our $8.99/month subscription, use our proxies and support! , Same open-source changedetection.io, minus the hard parts, No infrastructure to baby-sit.

• Chrome browser included.
• Nothing to install, access via browser login after signup.
• Super fast, no registration needed setup.
• Get started watching and receiving website change notifications straight away.
• See our tutorials and how-to page for more inspiration

AI-powered website change detection — smart alerts and plain-language summaries

Stop drowning in noise. Connect any LLM (OpenAI, Gemini, Anthropic, Ollama and more) and go from "something changed" to "only the thing you care about changed".

AI change detection rules — write a plain-English intent once: "notify me only when the price drops below $50", "alert me when the item comes back in stock", "ignore navigation and footer changes". The AI evaluates every detected diff against your intent and silently suppresses everything irrelevant. Fewer false positives, zero noise.

AI change summaries — instead of staring at a raw diff, your notification reads "Price dropped from $89.99 to $67.00" or "3 new products added to the listing". Works globally or per-watch, with full control over the prompt.

Works with any model you already pay for — GPT-4o-mini and Gemini Flash handle this well at fractions of a cent per check. Or run it entirely locally with Ollama, vLLM, LM Studio, or any OpenAI-compatible self-hosted endpoint — pick the OpenAI-compatible (vLLM, LM Studio, llama.cpp) option in the provider dropdown and point it at your server's /v1 URL. Powered by LiteLLM, giving you seamless access to 100+ supported providers and models.

We've got a quick tutorial here - Bring your own LLM/AI Key to changedetection.io for change summaries and triggers.

Yes - Even MCP is supported https://changedetection.io/MCP - Easily connect Claude.AI / OpenAi and others to your changedetection.io dashboard - Now your web page changes become a resource for easily asking questions and building on.

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.

Awesome restock and price change notifications

Enable the "Re-stock & Price detection for single product pages" option to activate the best way to monitor product pricing, this will extract any meta-data in the HTML page and give you many options to follow the pricing of the product.

Easily organise and monitor prices for products from the dashboard, get alerts and notifications when the price of a product changes or comes back in stock again!

This is the beginning of the README. Read the rest at the original. Read the full README ↗