Works with your stack

Send change alerts directly to any Slack channel. Rich message formatting shows you exactly what changed with inline diffs and screenshots. Configure per-monitor routing to keep alerts organized across channels.

• Rich formatted messages with diffs
• Per-monitor channel routing
• Screenshot attachments
• Thread-based change history

Get change notifications in your Discord server. Embed-style messages include change summaries, diff highlights, and direct links to detailed change views. Works with any Discord channel using webhook URLs.

• Discord embed formatting
• Webhook-based setup
• Change summary embeds
• One-click setup per channel

Receive change alerts in your inbox. Email notifications include a clear summary of what changed, before/after comparisons, and links to the full change detail. Available on every plan, including free.

• HTML-formatted change reports
• Before/after comparisons
• Daily digest option
• Available on all plans

POST change data to any URL. Webhook payloads include the full change diff, monitor metadata, and timestamps. Build custom workflows in Zapier, Make, n8n, or your own backend. Includes retry logic and delivery logs.

• JSON payload with full diff data
• Custom headers and authentication
• Retry logic with exponential backoff
• Delivery logs and debugging tools

Full programmatic access to OnChange. Create and manage monitors, retrieve change history, pull diffs, and configure alert rules through a well-documented REST API. Build dashboards, automations, and custom tooling.

• CRUD operations for monitors
• Change history and diff retrieval
• API key authentication
• Rate-limited with generous quotas

Monitor pages directly from your browser. Right-click any page to start monitoring, use the visual CSS selector picker to target specific elements, and manage your monitors from the extension popup.

• One-click monitor creation
• Visual CSS selector picker
• Quick monitor management
• Chrome and Firefox support