Website response time monitor — know how slow your site really is
Slow pages lose visitors and rankings. Check any URL's response time below for free — then let DeskUptime keep measuring on a schedule and alert you the moment it degrades.
Check a URL now See DeskUptime →Free response time check
Enter any URL. You get the measured response time, HTTP status, redirect info and SSL expiry — the same signals paid monitors use.
Prefer the terminal? Do the same yourself:
curl -sL -o /dev/null -w 'Total: %{time_total}s · TTFB: %{time_starttransfer}s\n' https://example.com
# or let DeskUptime watch it continuously:
deskuptime watch https://example.com --interval 60
What response time numbers mean
Measured at the server edge, before rendering. These are the thresholds worth knowing.
| Server response | Verdict | What it means |
|---|---|---|
| < 200 ms | Excellent | Google Core Web Vitals “good”. Users perceive it as instant. |
| 200–500 ms | Fine | Normal for dynamic sites. Watch for trends, not single values. |
| 500 ms–1 s | Sluggish | Visitors notice. Usually cache config or a slow database query. |
| > 1 s | Problem | Bounce rates climb and rankings suffer. Investigate now. |
A single good number isn't enough — degradation happens gradually. That's what scheduled monitoring is for.
One-off check vs. scheduled monitoring
The free checker answers “how fast is it right now?”. Monitoring answers the question that actually costs money:
Slowdowns creep in
A plugin update, a growing database table, an expired cache — each adds 100 ms. Nobody notices until conversion has quietly dropped for weeks.
Downtime happens at night
Deployments fail, hosts restart, certificates expire at 03:00 UTC. The average outage lasts hours longer than it needs to because nobody was watching.
You find out from users
The worst alert channel is a customer email. Monitors flip that: you know first, fix it before they hit it, and look professional doing it.
Cloud monitors vs. your own machine
Latency monitoring exists as SaaS. Here is how it compares.
| SaaS monitors (Pingdom, UptimeRobot…) | Self-hosted stacks | DeskUptime | |
|---|---|---|---|
| Cost | $7–15/month | Free + a server to maintain | $19 once, then $0 |
| Check interval | Limited by plan | Your cron | Seconds — while your machine runs |
| Alerts | Email/SMS per plan tier | You build it | Desktop notifications + webhook |
| SSL & content checks | Add-ons / separate products | You build it | Included |
| Privacy | They see everything you watch | Yours | Yours — checks run locally |
One $19 license covers unlimited URLs on up to 3 machines. No monthly fee, ever.
FAQ
What is a good website response time?
Under 200 ms server response is excellent, 200–500 ms is normal, and anything consistently above 1 second loses visitors and search rankings. Judge trends rather than single measurements — a site that went from 250 ms to 800 ms has a problem even though 800 ms sounds acceptable.
Why do two checks give different times?
Network path, caching, server load and geography all affect the number. This checker runs from Cloudflare's edge, which approximates a typical visitor rather than your own connection. Run a few checks and look at the spread instead of trusting one value.
Does this work on any website platform?
Yes. A URL is a URL — WordPress, Shopify, Webflow, Squarespace, Next.js, a static host, or hand-written HTML. Nothing is installed on the target site and no CMS-specific knowledge is needed.
How does scheduled monitoring work?
Install the desktop app or CLI, add your URLs, and DeskUptime re-checks them on your interval while your machine runs. If a site goes down or responds slower than usual, you get a desktop notification — optionally forwarded to a webhook. No account, no cloud dashboard, no subscription.
Is checking someone else's site okay?
An occasional check of a public page is what every browser does on every visit. Use sensible intervals, respect robots.txt where applicable, and don't try to bypass paywalls or login walls — DeskUptime only sees what an anonymous visitor sees.