Convert Multi-language JSON to Markdown online

Upload a Multi-language JSON file and download it as Markdown. 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.

Markdown

Plain Markdown files translated as a single block of content, with a {translationKey} placeholder standing in for the key. A good fit for blog posts, docs pages and long-form marketing copy that live outside a typical i18n key-value structure.

One file per language. Format documentation

Need it the other way round? Convert Markdown 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" } }
{
  "en_US": {
    "hello.world": "Hello World!",
    "my_address": "My address"
  },
  "pl_PL": {
    "hello.world": "Witaj Świecie!",
    "my_address": "Mój adres"
  }
}

To: Markdown

Plain Markdown files translated as a single block of content, with a {translationKey} placeholder standing in for the key. A good fit for blog posts, docs pages and long-form marketing copy that live outside a typical i18n key-value structure.

Used by: static site generators, blogs, documentation sites, content teams. One language per file. Read the Markdown format guide.

# Title My blog post, documentation page, markdown content or any other plain text in English [Learn more](https://simplelocalize.io/docs/file-formats/markdown/)
# Title
My blog post, documentation page, markdown content or any other plain text in English
[Learn more](https://simplelocalize.io/docs/file-formats/markdown/)

How to convert Multi-language JSON to Markdown

  1. Drop your .json file into the converter above, or paste its content.
  2. Click Convert. You get one .md file per language.
  3. Preview the result, copy it or download the files.

What changes between Multi-language JSON and Markdown

  • Multi-language JSON holds every language in one file, so the converter writes one Markdown file per language found in the source.

Convert and translate in one place

If you need the Markdown 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 Markdown. 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 Markdown. Placeholders are kept, and Apple and Android specific syntax is translated between platforms. Read more in the pluralization guide.

Translate your Markdown files

  • Import Multi-language JSON or Markdown 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
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