Best Dev Utilities Tools

Test regular expressions with live match highlighting.

Build cron expressions visually with a human-readable description.

Convert .env files to JSON, YAML, or shell exports.

Escape and unescape strings for JSON, JS, HTML, XML, SQL, RegExp, and shell.

Convert identifiers between camelCase, snake_case, kebab-case, and more.

Conservatively strip comments and whitespace from JS or CSS.

Build a request and generate curl, fetch, axios, and more.

Validate and inspect UUIDs, including version and timestamp.

Convert a curl command into JavaScript fetch() code.

Convert a JS object literal into strict, valid JSON.

Searchable reference of common git commands with copy buttons.

Lint a Dockerfile for common best-practice issues.

Validate package.json fields, semver ranges, and scripts.

Compare versions and test semver ranges (^, ~, >=).

Side-by-side line diff of two code snippets with stats.

Sort, dedupe, and filter lines with regex include/exclude.

Searchable regex syntax reference with examples and copy buttons.

Unix permission calculator: checkboxes, octal, and symbolic.

Format and indent SQL queries for readability.

Validate YAML and preview it as JSON.

Generate Apache .htaccess redirect and rewrite rules.

Format and indent GraphQL queries and mutations.

Remove comments from JS, HTML, Python, or SQL source.

Convert indentation between tabs and spaces.