Utility

Generate fake credit card numbers that pass Luhn validation.

Validate credit card numbers using the Luhn algorithm.

Format, validate, and explain cron schedule expressions.

Reddit GEO & Marketing, done for you.

Convert cURL commands to PHP cURL code.

Compare two texts and highlight the differences between them.

Obfuscate JavaScript code to make it harder to read.

Compare two JSON objects and highlight the differences.

Test JSONPath expressions against JSON data.

Test XPath expressions against XML data.

How SaaS founders actually get their first customers

Compare two XML documents and highlight the differences.