A searchable list of language abbreviations in concordance with ISO 639-1.
This is a tiny tool that I made for myself some time ago. I got tired of searching language codes while working with lang attributes.

 
ISO 639 is a set of standards by the International Organization for Standardization that is concerned with representation of names for languages and language groups.

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• License: Mozilla Public License 2.0
• Weekly downloads: 0
• Average daily users: 2
• Rating: 3/5 of 1 ratings
• Created: 2018-10-01 17:19:30
• Last updated: 2018-10-02 08:45:10
• Homepage:
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/iso-639-1-language-codes/
• API: {2c75768d-8fbb-4032-8125-abfe78c22299}