Check-online

A simple network connectivity watcher for the browser.

checkonline.vercel.app mathieucaroff.com/checkonline

Features

Connectivity Status

• Continuous connectivity checking
• Choose the check periodicity (0.5s by defalut)
• Choose the reactivity threashold (0.5s by defalut)
• The icon changes to indicate the connectivity status.
• The title of the tab can be made to change with the connectivity status.
• The background of the page changes with the connectivity status.

Service availability

• The page becomes available offline after it has been loaded once.

History

• The history of the connectivity status is displayed for the ongoing day and the previous day. Every second of the day is displayed in at least one pixel.
• The history for days further in the past is stored in the local storage of the page, and is accessible via a menu.

Configuration

• The configuration can be changed through the GUI
• It is saved in the local storage of the browser

Frequently asked questions

• Why the title does not change by default?
  • Whenever the title is changed, the browser marks the tab with a dot to signal this change to the user (tested in Firefox). This can become bothersome very quickly