Pricing

Pay per usage

Website Change Monitor & Alerter

Monitor web pages for content changes. Track page diffs, get webhook alerts when monitored pages change. Supports CSS selectors for targeting specific sections.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

Richard P

Actor stats

Bookmarked

Total users

Monthly active users

9 hours ago

Last modified

How it works

Provide a list of URLs to watch
The Actor fetches each page and computes a content fingerprint (SHA-256 hash)
On each run, it compares against the previously stored fingerprint
If content changed: it generates a diff, records the change event, and optionally sends a webhook alert
If unchanged: quietly records the check (in "all_runs" mode) or skips (in "changes_only" mode)

Features

CSS Selector Support — monitor only a specific part of a page (e.g., #pricing-table, .announcement-bar)
Smart Diffing — generates unified diffs showing exactly what changed
Webhook Alerts — POST change notifications to any HTTP endpoint
Persistent State — fingerprints are stored in Apify's key-value store between runs
Schedule-Friendly — designed for cron/scheduled runs; only alerts on actual changes

Input

Field	Type	Description
`urls`	array	List of URL objects to monitor
`urls[].url`	string	Required. The page URL
`urls[].name`	string	Optional label for the page
`urls[].selector`	string	Optional CSS selector to watch a specific section
`webhookUrl`	string	URL to POST change notifications to
`notificationType`	enum	`"changes_only"` (default) or `"all_runs"`

Webhook Payload

When a change is detected, a POST request with JSON body is sent to your webhook URL:

{
  "event": "page_changed",
  "name": "My Page",
  "url": "https://example.com",
  "changed_at": "2024-01-01T00:00:00+00:00",
  "diff_preview": "--- previous\n+++ current\n@@ -1 +1 @@\n-old content\n+new content",
  "previous_hash": "abc...",
  "current_hash": "def..."
}

Use Cases

Monitor competitor website changes (pricing, features, copy)
Track documentation, terms of service, or policy updates
Watch job postings for new openings
Monitor regulatory or compliance page changes
Detect when a product goes in/out of stock

Web Page Change Monitor - Track Website Changes & Get Alerts

scrappy_garden/web-page-change-monitor

Monitor any website for changes automatically. Track content updates, price changes, product availability, news updates. Get instant alerts when pages change. Perfect for competitor monitoring, price tracking, content surveillance, and automated change detection. Export change history to JSON.

Bikram Adhikari

Website Change Monitor - AI Page Diff Tracker

viralanalyzer/website-change-monitor

Monitor any website for changes. Visual diffs, AI change summaries.

viralanalyzer

5.0

Website Change Monitor - Page Diff & Alerts

logiover/website-change-monitor

Monitor any website for content changes automatically.

Logiover

Firecrawl Website Change Monitor - Track Page Changes with AI

alizarin_refrigerator-owner/firecrawl-website-change-monitor---track-page-changes-with-ai

Monitor websites for content changes. Get notified when pricing, inventory, competitor pages, or any web content changes. Uses Firecrawl for intelligent change detection. Markdown Comparison JSON Extraction Change Notifications Webhook Integration Scheduled Monitoring

The Howlers

Website Change Monitor — Content Diff & Alerts

accurate_pouch/website-change-monitor

Monitor websites for content changes. Text diff, hash comparison, CSS selector targeting. Webhook alerts when content changes. Use with Apify scheduling for daily monitoring. 5 URLs free.

Manchitt Sanan

Website Change Detector

technicaldost/website-change-detector

Monitor websites for content changes with visual comparison. Get alerts when pages update.

Technical Dost Solutions

Website Change Monitor

vedder1980/website-change-monitor

Monitor critical web pages for meaningful changes and generate a clean change log for alerts, competitor tracking, and content watchlists.

Daniel Ferreira de Almeida

Website Change Monitor: Track Page Changes, Pay Per Change

scrapemint/website-change-monitor

Monitor any list of web pages on a schedule and get a structured JSON row when a page changes: added and removed lines, previous and current text, timestamps. No browser, no CSS selector needed, no API key. Pay only for detected changes.

Ken M

Page Watch — Website Change Monitor & Content Tracker

mfapitools/page-watch

Monitor any URL for content changes with hash-based change detection. Pay per check + per detected change. Ideal for watching competitor pages, docs, pricing, or any public web page.

Mariano Ferreras

Website Change Monitor

foo121/website-change-monitor

Monitor any list of URLs for true content changes — CSS-selector targeting, keyword watches, noise-filtered diffing and webhook-on-change. Built for scheduled runs. Pay per result.