Patterns

Test and analyze pattern-matching expressions like Regex, Cron, and JSON Schema

3 tools available

Regex Parser Tester Featured

Test regular expressions with live match highlighting, token-by-token breakdowns, and sample string generation

Cron Parser

Parse cron expressions into human-readable schedules and preview next execution times

JSON Schema Validator

Validate JSON data against JSON Schema definitions

About Patterns Tools

What can be parsed here?

Machine-readable pattern expressions: regular expressions, cron schedules (5-field Unix and 6/7-field Quartz), and JSON Schema documents.

Parser capabilities

Test regex with live match highlighting, explain cron schedules in plain language with timezone-aware next runs, and validate JSON instances against a schema with precise error paths.

Sample inputs

\b\w+@\w+\.\w+\b
0 9 * * 1-5
30 2 */2 * *
{"type":"object","required":["id"]}