i18n JSON Linter

Find missing keys and format issues across multilingual JSON files

Base language JSON

Target language JSON

1 missing

0 extra

Missing keys (in Base JSON, not in Target JSON)

farewell

How to use

Paste your base-language JSON into the left panel.
Paste the target-language JSON into the right panel.
Read the missing and extra key counts shown as badges below both panels.
Expand the missing list to see exactly which keys need translating in the target file.

Examples

A base with keys "greeting" and "farewell" compared to a target with only "greeting" reports 1 missing key: "farewell".
If the target has a key "typo" not present in the base, it appears in the extra list with a warning badge.

Verify outputs before using in production. No warranty — see Terms.