Convert Multi-language JSON to XLIFF 1.2 online
Upload a Multi-language JSON file and download it as XLIFF 1.2. Translation keys, plurals and placeholders are preserved. Free, no account needed.
Pick the source format or let the converter detect it from the file.
Choose the format you want to download.
XLIFF 1.2 is the XML-based industry standard for exchanging translations with agencies and CAT tools. Each trans-unit carries the source text, the target translation and optional notes.
Need it the other way round? Convert XLIFF 1.2 to Multi-language JSON.
From: Multi-language JSON
A single JSON file where every translation key holds an object with one entry per language. Handy for small projects, static sites and CDN delivery because all languages travel together.
Used by: custom i18n setups, static site generators, CDN delivery. All languages in one file. Read the Multi-language JSON format guide.
{
"en_US": {
"hello.world": "Hello World!",
"my_address": "My address"
},
"pl_PL": {
"hello.world": "Witaj Świecie!",
"my_address": "Mój adres"
}
}To: XLIFF 1.2
XLIFF 1.2 is the XML-based industry standard for exchanging translations with agencies and CAT tools. Each trans-unit carries the source text, the target translation and optional notes.
Used by: Xcode, Angular, CAT tools, translation agencies. One language per file. Read the XLIFF 1.2 format guide.
<?xml version="1.0" encoding="UTF-8"?>
<xliff version="1.2">
<file source-language="en" target-language="pl" datatype="plaintext" original="messages">
<body>
<trans-unit id="hello_world">
<source>Hello World</source>
<target>Witaj Świecie</target>
<note>My comment</note>
</trans-unit>
</body>
</file>
</xliff>How to convert Multi-language JSON to XLIFF 1.2
- Drop your .json file into the converter above, or paste its content.
- Click Convert. You get one .xliff file per language.
- Preview the result, copy it or download the files.
What changes between Multi-language JSON and XLIFF 1.2
- Multi-language JSON holds every language in one file, so the converter writes one XLIFF 1.2 file per language found in the source.
- The language you enter in the converter becomes the XLIFF source-language, and the same texts fill both source and target elements.
Convert and translate in one place
If you need the XLIFF 1.2 file in more languages, the fastest route is a free SimpleLocalize project: import the Multi-language JSON file, add languages, run auto-translation with DeepL, Google Translate, OpenAI, Claude or Gemini, and download the result as XLIFF 1.2. The CLI does the same from CI with upload and download commands, so the conversion becomes part of your build. See also translating Multi-language JSON files.
Frequently asked questions
Is the converter free?
Yes. There is no signup and no limit on the number of conversions beyond a few requests per second.
Are my files stored?
No. The file is parsed in memory, converted and returned in the same request. Nothing is written to disk or a database.
What about plurals and placeholders?
Plural forms are normalized to ICU message syntax and written back in the native form of XLIFF 1.2. Placeholders are kept, and Apple and Android specific syntax is translated between platforms. Read more in the pluralization guide.
Convert Multi-language JSON to other formats
Translate your XLIFF 1.2 files
- Import Multi-language JSON or XLIFF 1.2 files into a free project
- Auto-translate with DeepL, Google, OpenAI, Claude or Gemini
- Download in any of the supported formats or publish to the CDN