Scheduled Tasks & Crontab
Cron Expression Parser & Generator
Parse and generate crontab schedules with ease. Automatically converts cron syntax into plain-English descriptions and calculates the next 5 run times in your timezone.
Pure client-side schedule calculation, zero server requests
Cron Expression Parser & Generator
100% client-side parser, plain-language description, next run predictions, and visual scheduler.
Presets & Quick Builder
💡 快捷键: Ctrl/Cmd + Enter 复制表达式，Esc 清空输入。
Human-Readable Schedule
Next 5 Scheduled Runs
Predictions are calculated in your local device timezone
How it works
Standard 5-Field & 6-Field Cron Syntax Guide
Cron expressions are fundamental in Linux crontab, GitHub Actions, Node-cron, and backend schedulers. However, cryptic combinations of asterisks, slashes, and ranges often lead to scheduling mistakes and production downtime.
Dev Desk Cron Parser runs entirely client-side. It translates expressions into plain English and computes the next 5 run dates using your local timezone, keeping your infrastructure schedules strictly confidential.
Syntax: [min 0-59] [hour 0-23] [day 1-31] [month 1-12] [weekday 0-6], supporting * (every), / (step), , (list), - (range).
FAQ
Cron Expression Parser & Generator · FAQ
Does it support 6-field Quartz cron expressions?
Yes. When 6 fields are detected, the first field is parsed as seconds (0-59), supporting extended crontab and quartz syntax.
Which timezone is used for next run calculations?
Calculations automatically use your device's local browser timezone so you see real-world execution times directly.
Are cron expressions transmitted to any backend?
Never. All calculations are executed client-side in your browser JavaScript engine. No schedule details leave your machine.