Validators
Language Code Validator
Validate language codes such as en, de, fr, and es directly in your browser.
Tool
Validate language codes such as en, de, fr, and es directly in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this free Language Code Validator to check whether a language code is formatted correctly. It can help detect invalid length, unsupported characters, wrong casing, malformed subtags, and common ISO 639 or BCP 47 style issues. The validation runs directly in your browser.
Examples
- en
- de
- fr
- es
Frequently Asked Questions
What does this language code validator check?
It checks whether a language code follows common formatting rules, such as two-letter or extended language tag patterns.
Does this check translation availability?
No. This tool checks the code format only. It does not verify whether translations or content are available for that language.
Is my language code uploaded?
No. The validation is designed to run locally in your browser.