JSON Validator
Check whether JSON syntax is valid before you use it in apps, APIs, or config files.
Both tools belong to developer tools and usually solve closely related tasks.
Developer Tools
Explore related tools you may want to use together with Regex Tester or instead of it, depending on your task.
Use this regex tester to try a pattern against sample text and see whether it matches. It is useful for developers, QA work, validation rules, parsing, scraping patterns, text extraction, and debugging regex behavior before you add the expression to real code.
Related pages are useful when Regex Tester is only one step in a bigger workflow. Sometimes you need a reverse action, a cleanup step, a validator, a supporting converter, or a nearby tool in the same category.
Return to the main Regex Tester page to run the tool directly.