How does the uptime monitor work?

While this tab stays open, your browser asks our server to probe the URL at the interval you choose (30 s, 1 min or 5 min). Each probe records the HTTP status and response time, building a live chart, uptime percentage and incident log.

Does monitoring continue after I close the tab?

No. This is a live, in-browser monitor — checks run only while the page is open. For 24/7 alerting you need a dedicated monitoring service; this tool is ideal for watching a deploy, an outage or a flaky server in real time.

How accurate is the response time shown?

Each value measures how long our server waited for the site’s response headers. It excludes your own connection, so it reflects the site’s real server-side speed and general internet reachability rather than local network conditions.

What counts as an incident in the log?

An incident is any transition between states — a site going from up to down or recovering from down to up. Each entry is timestamped with the HTTP status observed, so you can measure exactly how long an outage lasted.

Which check interval should I choose?

Use 30 seconds when actively watching an outage or deployment, 1 minute for general observation, and 5 minutes for long background sessions. Shorter intervals give finer detail but generate more requests to the target site.

How is uptime percentage calculated?

It is the number of successful checks divided by total checks in the current session. A site that was down for 2 of 40 checks shows 95% uptime. The figure covers only your monitoring window, not historical availability.

Can I save or share the monitoring results?

Yes. The Download CSV button exports every sample — timestamp, status code, up/down state and response time in milliseconds — ready for spreadsheets, incident reports or sharing with your hosting provider.

Will this tool overload the website being monitored?

No. The monitor sends one lightweight request per interval — at most two per minute — which is negligible for any production site. It is a diagnostic tool, not a load test, and checks stop the moment you leave the page.

Website Uptime & Response Time Monitor

Enter a URL and watch a live chart of its response time with automatic re-checks, uptime stats and an incident log.

Updated June 2026

URL to monitor

Check interval

Checks run from our servers at your chosen interval while this page is open — nothing runs in the background after you leave.

How to use Website Uptime & Response Time Monitor

The Website Uptime Monitor turns your browser tab into a live status dashboard for any URL. Pick an interval — every 30 seconds, minute or 5 minutes — and the tool repeatedly probes the site from our servers, plotting response time on a live chart while tracking uptime percentage, fastest and slowest responses and every status change in an incident log. It is the perfect companion while you watch a deployment roll out, wait out an outage, or investigate a server that feels intermittently slow, and the whole sample history can be exported as CSV for reports.

Enter the website URL you want to monitor.
Choose a check interval: every 30 seconds, 1 minute or 5 minutes.
Click Start — checks run automatically while this tab stays open.
Watch the live response-time chart, uptime percentage and incident log update.
Pause or stop anytime, and download the collected samples as CSV.

Spotting intermittent problems a single check misses

One-off "is it down" checks only capture a single moment, so a server that fails every few minutes can easily look healthy. Continuous sampling reveals the patterns that matter: periodic timeouts that line up with a cron job, latency spikes under load, or a load balancer sending a fraction of requests to a dead backend. Even a few minutes of monitoring at 30-second intervals paints a far more honest picture of stability than any single probe, and the incident log timestamps each transition so you can correlate failures with deploys or traffic peaks.

How to read the response-time chart

A flat line at a low value is the healthy baseline. A slowly rising trend often means resource exhaustion — memory pressure, a filling connection pool or a queue backing up. Sharp isolated spikes usually indicate cold caches, garbage-collection pauses or a slow upstream dependency, while gaps marked as down mean the probe received no usable response at all. Because checks originate from our servers, the chart reflects general internet reachability rather than your local Wi-Fi, making it good evidence when escalating to a host.

Common chart patterns and their likely causes
Pattern	Likely cause
Flat, low latency	Healthy server with stable load
Gradual upward trend	Resource exhaustion or growing queue
Isolated sharp spikes	Cold cache, GC pause or slow upstream call
Regular periodic spikes	Scheduled job competing for resources
Intermittent down samples	Crashing process or unhealthy backend in rotation

Glossary

Uptime percentage: The share of checks that returned a successful response during the monitoring session.
Response time: The time between sending a request and receiving the server’s response headers, in milliseconds.
Incident: A transition between up and down states, recorded with a timestamp in the incident log.
Check interval: How often the monitor probes the target URL, such as every 30 seconds or 5 minutes.
Probe: A single automated request sent to the target site to measure its availability and speed.

Frequently Asked Questions

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Why use Website Uptime & Response Time Monitor?

Watch a live response-time chart update automatically at your chosen interval
See uptime percentage, min/avg/max latency and total checks at a glance
Catch intermittent failures that a single one-off check would miss
Get a timestamped incident log of every up/down transition
Export the full sample history as CSV for postmortems and reports

Common use cases

Watch a production site recover in real time during an outage
Verify a deployment did not degrade response times after release
Gather evidence of intermittent downtime before contacting a hosting provider
Monitor a flaky staging server while you reproduce a bug
Compare latency before and after enabling a CDN or cache layer

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