Lokalise supports structured JSON files. 

Structured JSON file entries can contain the following properties:

  • translation  – The actual translation (required)

  • notes – Description of the key (optional)

  • context – Context of the key (optional)

  • limit – Character limit for the key (optional)

You might also be interested in checking out our JSON localization tutorial (aimed towards web devs).


    "mm_homepage": {
        "translation": "Homepage",
        "notes": "Title for main menu"
    "mm_about": {
        "translation": "About us",
        "notes": "Title for main menu",
        "limit": 20
    "somekey": {
        "translation": "First level key"
    "somekey::sub": {
        "translation": "Second level key"

Keep in mind that structured JSON does not support key nesting (multi-level keys, such as nested JSON), so all of the keys must be provided in one level. This also applies to export - all of the selected keys to be exported in structured JSON format will be exported in one level.

Did this answer your question?