DiffHook
Real-time website change monitoring with webhook alerts
A sharp, webhook-first monitoring tool for developers who need real-time action. Transparent pricing and solid noise filtering make it a strong buy over consumer-grade alternatives, but non-technical users may find it bare-bones.
- Developers building automation workflows on n8n, Make, or Zapier
- E-commerce teams tracking competitor pricing changes
- Compliance and legal teams monitoring regulatory policy updates
- DevOps teams monitoring vendor status pages and SLAs
- Teams needing a standalone dashboard with email-only alerts
- Non-technical users who prefer visual dashboards over webhooks
- Enterprise customers requiring on-premise deployment (available on request)
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In short
DiffHook — Real-time website change monitoring with webhook alerts. Best for Developers building automation workflows on n8n, Make, or Zapier, E-commerce teams tracking competitor pricing changes, Compliance and legal teams monitoring regulatory policy updates. Free to start; paid plans from $12/mo.
What's new in DiffHook
Checked 15 days agoAcross the latest 8 updates: 8 feature updates.
How to Track a Web Price List for Instant Alerts
Guide on monitoring pricing sources, filtering noise, and routing alerts for web price lists.
Website to API Monitoring: A Practical Setup Guide
Guide turning web changes into structured events for downstream systems.
When You Need an API for Websites, Not Just Alerts
Explains API-based website monitoring for structured data use in pricing, compliance, and operations.
How to Build a Workflow Web Monitoring Teams Trust
Guide on sending the right alert with context to the right owner.
How to Catch Site Changes Across Pages, Feeds, and APIs
Guide to monitoring multiple sources and reducing noise with alerts.
How to Watch Web Page Updates Without Refreshing
Methods for automatic web page watching and routing meaningful changes.
How to Compare Website Page Content Over Time
Methods for content comparison, audit history, and alerting.
Why Website Changes History Matters for Compliance
Audit trail importance for compliance and policy risk management.
Viability Score
How likely is DiffHook to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- Website change detection (full page or element)
- JSON API and RSS/Atom feed monitoring
- Sitemap monitoring
- CSS/XPath selectors for targeted monitoring
- AI alert modes: price, availability, new items, custom prompt
- Webhook delivery with HMAC signatures
- Visual checks (screenshot diffs)
- Custom polling intervals from 1 min to 60 min
- Smart noise filtering to ignore layout changes
- Automatic retries and delivery logs
- REST API for programmatic monitor management
- Team collaboration with role-based access
- SSO (SAML/OIDC) on Business plan
- Log storage and audit history up to 1 year
- Add-ons for extra monitors, visual checks, log storage
About DiffHook
DiffHook is a webhook-first change monitoring platform that tracks pages, prices, policies, and APIs, delivering structured change events to the systems that need them. Built for developers and teams who need to act on web changes instantly, DiffHook polls URLs, diffs snapshots, and fires page.changed events with smart noise filtering. It supports lightweight checks (page content, JSON, RSS) and visual checks (screenshots) with AI alert modes for price, availability, and custom prompts. Key features include CSS/XPath selectors, sitemap monitoring, HMAC webhook signatures, REST API, and team roles with SSO on Business. Pricing is transparent: Free (3 monitors, 60-min polling), Starter ($12/mo, 20 monitors, 15-min), Pro ($29/mo, 100 monitors, 5-min), Business ($79/mo, 500 monitors, 1-min). Compared to Visualping or ChangeTower, DiffHook differentiates with webhook-first architecture, noise filtering, and no per-check billing. It excels for automation workflows but is less suited for users wanting a standalone dashboard with email-only alerts.
Behind the Verdict
DiffHook is a solid choice if you're building automated workflows on n8n, Make, or Zapier and need to react to web changes in seconds. The webhook-first approach means every change becomes a structured event you can pipe into Slack, a database, or a CRM. Pricing is refreshingly transparent — no per-check surprise costs, just flat tiers with clear limits. We'd reach for this when tracking competitor pricing, regulatory updates, or vendor status pages. Where it bites: the free plan is limited to 3 monitors and 60-min polling, so you'll likely need a paid plan for real-world use. Also, if you prefer a visual dashboard with email alerts over webhooks, tools like Visualping are simpler. For developer-led teams who want to programmatically consume changes, DiffHook is a strong pick; for casual users, it's overkill.
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Use Cases
- Monitor competitor pricing pages and push changes to Slack within 5 seconds.
- Track regulatory filings and compliance portals for policy updates.
- Watch vendor status pages and alert on-call before customers report issues.
- Detect prospect hiring and product launches to trigger outbound sales.
- Spot unauthorized brand mentions or copied content on the web.
- Replace home-grown scraping scripts with a reliable, monitored webhook infrastructure.
Limitations
- Free plan limited to 3 monitors and 60-min polling.
- Visual checks are heavily rate-limited on lower tiers (250/month free vs 50,000/month Business).
- Log history retention ranges from 7 days (free) to 1 year (Business).
- Extra monitors and visual checks require paid add-ons.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Integrations
Resources & Guides
- Resourcediffhook.com
How To Track A Web Price List For Instant Alerts · DiffHook
Helpful link from diffhook.com
- Resourcediffhook.com
Website To Api Monitoring A Practical Setup Guide · DiffHook
Helpful link from diffhook.com
- Resourcediffhook.com
When You Need An Api For Websites Not Just Alerts · DiffHook
Helpful link from diffhook.com
- Resourcediffhook.com
How To Build A Workflow Web Monitoring Teams Trust · DiffHook
Helpful link from diffhook.com
- Resourcediffhook.com
How To Watch Web Page Updates Without Refreshing · DiffHook
Helpful link from diffhook.com
- Resourcediffhook.com
How To Catch Site Changes Across Pages Feeds And Apis · DiffHook
Helpful link from diffhook.com
- Resourcediffhook.com
Why Website Changes History Matters For Compliance · DiffHook
Helpful link from diffhook.com
- Resourcediffhook.com
How To Compare Website Page Content Over Time · DiffHook
Helpful link from diffhook.com
- Resourcediffhook.com
How To Detect Website Changes Before Customers Do · DiffHook
Helpful link from diffhook.com
Official links
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