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from $0.88 / 1,000 page checks

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Website Change Monitor — Page Diff & Change Alerts

Try for free

Monitor any web page for content changes between runs. Each check hashes the page (or a CSS-selected part of it), compares it with the previous snapshot, and returns a line-level diff on change. Optional JavaScript rendering and webhook alerts.

Pricing

from $0.88 / 1,000 page checks

Rating

0.0

(0)

Developer

SIÁN OÜ

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Total users

Monthly active users

a day ago

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Website Change Monitor — Page Diff & Change Alerts API through CLI

The Apify CLI is the official tool that allows you to use Website Change Monitor — Page Diff & Change Alerts locally, providing convenience functions and automatic retries on errors.

Install Apify CLI

Using installation script (macOS/Linux):

$curl -fsSL https://apify.com/install-cli.sh | bash

Using installation script (Windows):

$irm https://apify.com/install-cli.ps1 | iex

Using Homebrew:

$brew install apify-cli

Using npm:

$npm install -g apify-cli

Other API clients include:

Website Change Monitor — Page Diff & Change Alerts API in Python

Website Change Monitor — Page Diff & Change Alerts API in JavaScript

Website Change Monitor — Page Diff & Change Alerts OpenAPI definition

Website Change Monitor — Page Diff & Change Alerts API

Website Change Monitor | Page Diff Alerts

taroyamada/url-change-watch-scraper

Monitor public web pages and receive source-linked added/removed text, change alerts, and portfolio diff reports. Unchanged checks emit no rows and no event charge.

naoki anzai

Website Change Monitor - AI Page Diff Tracker

viralanalyzer/website-change-monitor

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

viralanalyzer

5.0

(4)

AI Website Change Intelligence

gifted_wagon/ai-website-change-intelligence

Turn noisy website snapshots into meaningful pricing, product, availability, legal, contact, and structural change alerts with importance, confidence, and before/after evidence—no AI key required.

Michael Olmos

Website Change Monitor: Page Diff Tracker, Pay Per Check

mrlarryjohnson/website-change-monitor

Watch any list of public pages on a schedule and get the ACTUAL changed lines, not just a ping. Detects edits, removals, and pages going 404. Failed fetches are never billed. No JavaScript rendering — honest about that.

Larry Johnson

Policy Change Monitor

matteogenovese/policy-change-monitor

Monitor policy, privacy, ToS, and cookie pages with clause-level diffs and alerts.

Matteo Genovese

Page Change Monitor

cynix_dev/page-change-monitor

Monitor web pages for content changes. Diffs each run against the previous snapshot and emits structured change records with added/removed lines — ideal for price, job, docs, and competitor monitoring.

Cynix Dev

Website Screenshot Monitor - Visual Diff & Change Alerts

signalgrove/website-screenshot-monitor

Capture full-page screenshots on a schedule, compare them pixel-by-pixel with the previous run, highlight what changed, and get webhook alerts. No API keys needed.

Starsurfer

Website Change Detector

technicaldost/website-change-detector

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

Technical Dost Solutions

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 Detector: Page Diff, Price & Content Alerts

fayoussef/website-change-monitor

Monitor any web page for changes and get a line-by-line diff of what was added and removed. Track competitor pricing, product listings, terms of service and job boards, with severity scoring, keyword watching and instant alerts to Slack, Discord, Telegram or any webhook.