Cron Expression Descriptor

Health v2 · maintenance only

Adoption not part of the score

1113 stars · 196 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

cRonstrue is a zero-dependency JavaScript/TypeScript library that parses cron expressions and converts them into human-readable descriptions, supporting 5, 6, and 7 part expressions, Quartz syntax, special characters, and 30+ languages. It is a port of the original C# cron-expression-descriptor library.

Use cases

• explain what a cron expression means in plain English
• show human-readable schedule descriptions in a scheduler UI
• validate and describe Quartz cron expressions
• display cron schedules in multiple languages
• help users write cron expressions by showing what they mean

When to choose

• you need to translate cron expressions to readable text in JavaScript or TypeScript
• you need Quartz scheduler expression support or 6/7 part expressions
• you need multilingual (i18n) cron descriptions
• you want a zero-dependency library that works in Node and the browser

When to avoid

• you need to generate cron expressions from natural language (this does the reverse)
• you need to actually schedule or run jobs on a cron schedule
• you need cron parsing in a language without one of its ports

Facets

library · maturity active

parser internationalization developer-tools developer-tools browser cross-platform cli cron cron-expression scheduling typescript zero-dependency quartz-scheduler i18n automation localization nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="bradymholt/cron-expression-descriptor")