Cron Timeline

Visualize crontab execution schedules as timeline, calendar, and Gantt chart

How to Use

Enter crontab expressions in the text input or upload a crontab file
Select a view mode (Timeline, Calendar, or Gantt Chart) and time range (24h, 7d, or 30d)
The execution schedule will be displayed graphically
Use the Expression Builder mode to interactively build cron expressions

Use Cases

When you want to visually verify crontab settings and identify schedule conflicts or gaps
When previewing execution timing before adding a new cron job
When you've forgotten cron syntax and want to build expressions with the builder
When sharing or explaining cron schedules with team members

Frequently Asked Questions

What cron formats are supported? ▼

Standard 5-field format (minute hour day month weekday) is supported. Step values like */5, ranges like 1-5, lists like 1,3,5, name aliases like mon and jan, and special strings like @daily are all supported.

Is my input data sent to a server? ▼

No, all processing is done in your browser. Your crontab data is never sent externally.

What's the difference between Timeline, Calendar, and Gantt Chart? ▼

Timeline shows execution points for each job on a time axis. Calendar displays a monthly view with execution counts as a heatmap. Gantt Chart shows execution density per time slot as bar charts for comparison.