
Flip a Coin
Simulate a coin toss; Heads or tails result
Others
Add and remove named countdown channels; Edit each channel’s minutes and seconds
Enable JavaScript to use the interactive controls. Your guide and examples are available below.
Add and remove named countdown channels; Edit each channel’s minutes and seconds
Create a 5-minute timer and a second 10-minute timer.
Browser
Source behavior is ephemeral: reloading clears channels. Deadline checks compensate for delayed callbacks, but browser sleep/background audio rules affect notification timing.
Independent countdowns with hundredths, editable names/durations, start/pause/resume/reset/remove, bulk controls, red completion state and observed three-tone alarm.
The main operations run in your browser. Device models may require a first-use download; browser storage and resource limits apply.
Source behavior is ephemeral: reloading clears channels. Deadline checks compensate for delayed callbacks, but browser sleep/background audio rules affect notification timing.

Simulate a coin toss; Heads or tails result
Others
Display scrolling text banners for events
Others
Analyze torrent files; Convert torrent data to magnet links
Others
Calculate MD5 file hashes; Calculate SHA-1 file hashes
Others