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Regex Tester

正規表現をライブテスト。

//g
toco.tools launched on 2024-04-01 and updated on 2025-11-20.
2 matches
  • #1 2024-04-01 @23
    • $1: 2024
    • $2: 04
    • $3: 01
  • #2 2025-11-20 @49
    • $1: 2025
    • $2: 11
    • $3: 20

关于Regex Tester

A regex tester shows which parts of sample text match your pattern—ideal for validation rules, log parsing, and replace previews. toco.tools updates matches live in the browser as you edit pattern and flags. Behavior follows JavaScript regex semantics, which may differ from PCRE or other engines. Complex patterns can be slow on huge inputs.

使用方法

  1. Enter your regex pattern
  2. Type sample text
  3. Review highlighted matches

常见问题

What is a regex tester?

An interactive tool that shows where a pattern matches sample text.

Can I test on Japanese text?

Yes. Unicode strings including Japanese work like any other text.

Is uploaded data sent externally?

No. All processing runs in your browser.