Free Website Change Monitor

How It Works

GoScreenAPI's free website change monitor lets you track visual changes on web pages without any cost or credit card requirement. Sign up, enter a URL, and monitoring begins within thirty seconds. The system captures screenshots of your target page on a recurring schedule, compares each new capture against the previous baseline, and sends you an email alert when changes are detected.

The free tier includes all core detection capabilities: full-page Chromium rendering, pixel-level comparison, change percentage scoring, and email notifications. Pages are monitored at regular intervals, and each alert includes a direct link to the visual diff showing exactly what changed. There are no trial periods or feature lockouts — the free plan is a permanent tier designed for individuals and small teams getting started with visual monitoring.

What Is Included

• Visual change detection — Full pixel-level comparison using real Chromium rendering. No simplified or headless-only captures.
• Email alerts — Receive notifications when monitored pages change beyond your threshold. Each alert links directly to the diff view.
• Diff visualization — Access side-by-side and overlay comparison views for every detected change. See exactly what moved, appeared, or disappeared.
• Configurable thresholds — Set the minimum change percentage that triggers an alert. Avoid noise from minor rendering variations.
• Screenshot history — Browse previous captures to understand when changes occurred and track page evolution over time.

Getting Started

Setting up your first monitor takes less than a minute. Create a free account, navigate to the Visual Monitor dashboard, and enter the URL you want to track. Choose your preferred check interval and sensitivity threshold, then activate the monitor. GoScreenAPI captures the initial baseline screenshot immediately, and subsequent checks begin on your configured schedule.

For pages with dynamic sections like rotating banners or live counters, configure ignore regions to exclude those areas from comparison. This prevents false alerts from content that changes on every page load while maintaining full coverage of the static elements you care about.

Who Is This For

The free website change monitor is designed for freelancers tracking client sites, small business owners monitoring their own pages, and developers who want deployment verification without adding another subscription. It is also ideal for anyone evaluating visual monitoring before committing to a paid plan with higher check frequencies and additional notification channels.

As your monitoring needs grow, upgrading unlocks shorter check intervals, more monitors, and additional alert channels including Slack notifications and webhook integrations. But the free tier remains fully functional for basic monitoring — there is no pressure to upgrade unless your workflow demands it.

For comprehensive change detection that goes beyond visual comparison, pair your monitors with automated website change detection features that track both visual and structural modifications to your monitored pages.