Developer tool category

Text & Code Tools

Use these tools when the problem is text rather than a structured data format. Test regular-expression behavior before replacing matches, or normalize words and identifiers into the naming style required by code, APIs, files, and documentation.

Common workflow

Where to start

4 recommended starting points

Step 1

Regex

Test regular expressions, inspect every match, and replace text with JavaScript RegExp syntax locally.

Open Regex

Step 2

Case Converter

Convert text between uppercase, lowercase, sentence case, title case, camelCase, PascalCase, snake_case, CONSTANT_CASE, dot.case, kebab-case, and URL slugs locally.

Open Case Converter

Step 3

Regex Tester

Check whether a JavaScript regular expression matches your sample text and catch invalid pattern syntax locally.

Open Regex Tester

Step 4

Regex Matcher

Find every regular-expression match and inspect match indexes, captures, and named groups as structured JSON.

Open Regex Matcher

Browse by subject

Topic hubs

1 focused topics

Regular Expressions

Regex tools, examples and common pattern fixes

Test and debug JavaScript regular expressions, inspect matching and capture groups, practice replacements, and find practical fixes for common pattern errors.

Explore Regular Expressions

Understand the concepts

Related guides

1 resources