Developer Tools

Decode JWT headers and payload claims locally for development and API troubleshooting.

Generate UUID v4 identifiers for database records, API tests, fixtures and distributed application workflows.

Encode text as Base64 for API payloads, data URIs, configuration values and development testing.

Decode Base64 strings into readable text while checking malformed input during API and integration debugging.

Percent-encode query parameters, paths and special characters for safe use in URLs and HTTP requests.

Decode percent-encoded URLs to inspect query values, redirects, tracking links and API requests.

Generate common cryptographic hashes for checksums, test data, integrity checks and development workflows.

Test regular expressions against sample text and review matches while developing validation rules.

Format SQL queries with readable indentation for debugging, reviews and documentation.

Format minified or poorly indented HTML for easier debugging, code review and template maintenance.

Organise CSS declarations and blocks into a readable structure for debugging and stylesheet maintenance.

Format and beautify JavaScript code in your browser for easier reading, debugging and review.

Explain cron expressions and preview scheduled run times before using them in servers, jobs or CI pipelines.

Generate C# model classes from sample JSON for .NET APIs, integrations and typed deserialization.

Create realistic JSON mock responses from a simple schema for frontend development, demos and API testing.

Generate a JSON Schema from sample JSON for API validation and documentation.

Test JSONPath expressions against JSON data and inspect the matching values.

Remove unnecessary whitespace from SQL queries for compact storage and transport.

Minify JavaScript source code by removing unnecessary whitespace.

Minify CSS stylesheets to reduce file size for web delivery.

Remove comments and unnecessary whitespace from HTML before publishing smaller templates and static pages.

Choose colors and copy HEX, RGB and HSL values for design and development.