Site Uptime Check
Check whether a public website answers: up or down, status code and response time, checked from the Utilkits server. A Pro live-data widget.
This widget asks the address you enter whether it answers, from the Utilkits server. No files are sent. How live-data widgets work
- No ads
- No watermarks
This widget fetches public data through the Utilkits server. Requests are listed below as you use it.
Blocks every fetch, XHR and beacon request this page makes and switches Google Analytics off, on tool pages, for this session.Requests this page makes are counted from then on; page-load requests are left out.
How this works / check it yourself
From the moment you add a file or change something in the tool, this badge lists the requests this page makes. It reads the browser's own list of requests (Resource Timing), which shows a request once it finishes, and watches every fetch, XHR and beacon call. Downloads, such as this site's PDF and OCR engines or an AI model from Hugging Face, are listed apart from requests that carry data out.
This page cannot see requests made inside background workers (such as the PDF engine pdf.js and Tesseract OCR), WebSocket and EventSource connections, form submissions, link pings or the site's service worker, so they are not counted here, and offline mode cannot block them. A request is listed once it finishes. Your browser's Network tab shows everything.
Offline mode blocks the fetch, XHR and beacon calls this page makes. A part of the site that set up its connection before the page finished loading, such as sign-in, is not blocked; if it sends anything, the badge counts it as sent.
On this page the widget asks the Utilkits server for public data; those requests are listed as live data. It sends no files.
- Open your browser's developer tools (F12, or Cmd+Option+I on a Mac) and choose the Network tab.
- Add your file, run the tool and look for any request that uploads it. Requests made by workers are listed there too.
- For the strongest test, turn Wi-Fi off once the page has loaded and run the tool again: tools that need no download still work.
More tools in Live data
All Live dataAbout Site Uptime Check
Check whether a public website answers. Enter its address and the widget asks it through the Utilkits server, then shows up or down, the status code, the response time and the time of the check. It checks again every 5 minutes while the page is visible. It is part of the Pro plan and sends no files.
How to use Site Uptime Check
- Enter a web address that starts with http:// or https://.
- Choose Check.
- Read the result: up, down or no answer, with the status code, the response time and the time checked.
Limits: One address at a time, on the standard web ports. Private, local and reserved network addresses are refused. The check is made from the Utilkits server, so it shows whether the site answers there. One site is checked at most 6 times a minute for all users together. It runs only while the page is open. Needs a Pro or Teams plan.
Frequently asked questions
Where is the check made from?
From the Utilkits server, not from your device. A site can be up there and still be unreachable on your own network.
What do up, down and no answer mean?
Up: the site answered with a status below 400. Down: it answered with an error status such as 500. No answer: it did not reply within 5 seconds.
Can it check a server on my own network?
No. Private, local and reserved addresses are refused, so the tool cannot be used to reach inside a network.
Does it keep watching after I close the page?
No. It checks when you ask and every 5 minutes while the page is visible. There is no background monitoring and no alert.