Website & Cloud Performance Monitoring
NetTests.NET monitors your sites and the cloud resources they depend on — the APIs, serverless endpoints and CDNs behind every page — from the outside, the way your customers reach them. Uptime, synthetic and real user monitoring sit alongside API checks with DNS, TCP, TLS and server time measured separately, CDN cache tracking, and 130+ free network diagnostic tools — so you know before your users do, and you know where to look.
Site Monitoring
Run any combination of our 130+ diagnostic tools against your sites on a schedule. Track uptime, TLS health, DNS records, email authentication, response times, and security headers — all in one place.
- ✓ Ping, traceroute, MTR — latency & packet loss
- ✓ TLS certificate expiry & chain validation
- ✓ DNS record integrity & propagation
- ✓ DMARC, SPF, DKIM email authentication
- ✓ HTTP security headers grading
- ✓ Full page load timing & resource waterfall
Cloud Performance
Measure the APIs, serverless endpoints and CDNs your site depends on, from the outside. Every delay is split into the parts with different owners, and every CDN response says whether it came from cache.
- ✓ DNS, TCP, TLS & server time on every request
- ✓ JSON response checks for APIs
- ✓ CDN provider, edge & cache-hit rate
- ✓ CDN vs origin — what your CDN saves
Real User Monitoring (RUM)
Core Web Vitals measured on your visitors' own phones, laptops and networks — the numbers Google ranks on. One script tag, no cookies, and no visitor identifier of any kind.
- ✓ LCP, INP & CLS at the 75th percentile
- ✓ Attribution — the element responsible
- ✓ Split by page, device, country & connection
- ✓ Your visitors compared against our probe
- ✓ Core Web Vitals section in client reports
- ✓ Pooled pageviews across unlimited sites
Report Building
Build custom reports from any set of tools, then schedule them to run automatically. Every result is stored, versioned, and delivered to the right people — automatically.
- ✓ Drag-and-drop report builder — no code needed
- ✓ Run once, hourly, daily, weekly, or custom cron
- ✓ Results delivered by email on every run
- ✓ Critical-threshold alerts via SMS
- ✓ Notifications to Slack & MS Teams channels
- ✓ Historical trend view across every run
Synthetic Monitoring
Replay the journeys that actually make you money — login, checkout, signup — step by step in a real browser, on a schedule. A 200 response doesn't prove anyone can buy anything.
- ✓ 13 step types — click, fill, assert, extract
- ✓ One session — login state persists throughout
- ✓ Full-page screenshot at the failing step
- ✓ HAR waterfall & run-to-run resource diff
- ✓ Per-step duration thresholds
- ✓ Desktop, tablet & mobile viewports
Cron & Heartbeat Monitoring
The failure nothing else can see: a backup, sync or report job that quietly stopped running. Your job pings a URL when it runs; NetTests alerts when the ping doesn't arrive.
- ✓ One URL per job — no agent to install
- ✓ Start, success & failure signals with exit codes
- ✓ Cron and systemd OnCalendar schedules
- ✓ Warns when the schedule doesn't match the real runs
- ✓ Flags runs that take abnormally long
- ✓ Job output kept with each check-in
Built for Agencies
Managing dozens or hundreds of client sites? The Agency Dashboard gives you a single pane of glass — every client site, every report, every alert — across your whole portfolio.
- ✓ Monitor an entire portfolio of client sites
- ✓ Per-client dashboards with white-label reports
- ✓ Team access with role-based permissions
- ✓ Bulk scheduling — run the same report across all clients
- ✓ Alert escalation by severity — SMS only on critical
- ✓ Slack & Teams integration per client workspace
Ready to get started?
Create a free accountNo credit card required — free plan includes 1 site and all diagnostic tools.