Website Change Monitor — Content Diff & Alerts

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Monitor any website for content changes. Compare text content, HTML hashes, or specific CSS selectors between runs. Webhook alerts when changes are detected. Use with Apify scheduling for automated daily/weekly monitoring. 5 URLs.

How it works

1. First run: Fetches each URL, extracts text content, computes a hash. Saves snapshot.
2. Subsequent runs: Provide previousDatasetId from the last run. The actor compares hashes and reports which pages changed.
3. Webhook: If any page changed, POSTs the diff to your webhook URL.

Use with Apify Scheduling (cron) to run daily/weekly and get notified when competitor pages, pricing, or content changes.

Quick start

{
"urls":["https://example.com","https://github.com"],
"mode":"text"
}

Second run (with comparison):

{
"urls":["https://example.com","https://github.com"],
"mode":"text",
"previousDatasetId":"DATASET_ID_FROM_FIRST_RUN"
}

Comparison modes

Input

Output

{
"url":"https://example.com",
"contentHash":"a1b2c3d4e5f6g7h8",
"textContent":"Example Domain This domain is for use in illustrative examples...",
"contentLength":1256,
"statusCode":200,
"checkedAt":"2026-04-14T10:00:00Z",
"changed":true,
"previousHash":"x9y8z7w6v5u4t3s2",
"diff":"Added: New pricing section with updated rates",
"status":"success"
}

Pricing

$0.003 per URL checked (pay-per-event pricing).

• Errors and dry runs are never charged.
• 100 URLs daily = $0.285/day = ~$8.55/month

Related actors in this suite

Other tools by accurate_pouch for site monitoring + crawling:

• Broken Link Checker — Recursive crawl, sitemap + robots.txt parsing, webhook, Sheets export. $0.005/page.
• Sitemap Analyzer — Parse, validate, status-check URLs, sitemap indexes. $0.004/sitemap.
• SSL Monitor — Certificate chain, expiry, fingerprint, key size, webhook. $0.004/domain.
• TheCrawler — Web scraper + LLM-powered structured extraction. AGPL-3.0, also on npm (thecrawler@0.1.1). $0.005/page.
• Lighthouse Auditor — PageSpeed Insights API, Core Web Vitals, deltas. $0.005/audit.

Run on Apify

👁 Run on Apify

No setup needed. Click above to run in the cloud. $0.003 per operation.