Productivity tools

See your screen size, user agent, device pixel ratio, time zone and browser capabilities.

Check whether copying and pasting work in your browser, and see why when they do not.

Set a timer for any length, with presets, a progress bar and an alert when it finishes.

Test every key on your keyboard and see the key, code and keyCode each one sends.

Check your microphone works, see the live input level and waveform, and set your gain.

Test mouse buttons, scroll and movement, measure polling rate and click speed, and diagnose a double-click fault.

A plain text scratchpad that saves itself in this browser as you type.

Check whether browser notifications work, and find which layer is blocking them.

A focus timer that cycles between work sessions and breaks, with adjustable lengths.

Pick fairly from a list, generate random numbers, or shuffle items into a random order.

Test left and right channels separately with tones from bass to treble.

Time anything to a tenth of a second, with lap splits you can copy out.

See one moment across several time zones, with working hours marked for each.

A simple checklist that remembers itself in this browser, with no account.

Test a touchscreen for dead zones and check how many fingers it tracks at once.

Check your camera works, see its resolution and frame rate, and capture a still.