Convert YAML to Qt Linguist online

Upload a YAML file and download it as Qt Linguist .ts. Translation keys, plurals and placeholders are preserved. Free, no account needed.

Pick the source format or let the converter detect it from the file.

Used when the source format holds one language per file. Also used as the source language for XLIFF output.

Choose the format you want to download.

Qt Linguist .ts

XML translation sources used by Qt Linguist and lrelease. Messages are grouped by context and compiled to binary .qm files at build time.

One file per language. Format documentation

Need it the other way round? Convert Qt Linguist to YAML.

From: YAML

YAML translation files use indentation instead of braces, which makes them easy to read and diff. Ruby on Rails, Symfony and many static site generators keep their locale files in YAML.

Used by: Ruby on Rails, Symfony, Jekyll, Hugo. One language per file. Read the YAML format guide.

hello-world: Hello World! nested: translation: key: Nested translation key other: translation: key: supported: Look this is also supported!
hello-world: Hello World!
nested:
  translation:
    key: Nested translation key
  other:
    translation:
      key:
        supported: Look this is also supported!

To: Qt Linguist .ts

XML translation sources used by Qt Linguist and lrelease. Messages are grouped by context and compiled to binary .qm files at build time.

Used by: Qt, QML, C++. One language per file. Read the Qt Linguist format guide.

<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE TS> <TS version="2.1" language="pl"> <context> <name>AboutPage</name> <message> <source>Author</source> <translation>Autor</translation> </message> <message> <source>Website</source> <translation>Strona WWW</translation> </message> <message> <source>Version</source> <translation>Wersja</translation> </message> <message> <source>Found %n files</source> <translation> <numerusform>Znaleziono %n plik</numerusform> <numerusform>Znaleziono %n pliki</numerusform> <numerusform>Znaleziono %n plików</numerusform> </translation> </message> </context> </TS>
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE TS>
<TS version="2.1" language="pl">
    <context>
        <name>AboutPage</name>
        <message>
            <source>Author</source>
            <translation>Autor</translation>
        </message>
        <message>
            <source>Website</source>
            <translation>Strona WWW</translation>
        </message>
        <message>
            <source>Version</source>
            <translation>Wersja</translation>
        </message>
        <message>
            <source>Found %n files</source>
            <translation>
                <numerusform>Znaleziono %n plik</numerusform>
                <numerusform>Znaleziono %n pliki</numerusform>
                <numerusform>Znaleziono %n plików</numerusform>
            </translation>
        </message>
    </context>
</TS>

How to convert YAML to Qt Linguist

  1. Drop your .yml file into the converter above, or paste its content.
  2. Confirm the language of the file. It is guessed from the file name, for example de.json or messages_pt-BR.properties.
  3. Click Convert. You get one .ts file per language.
  4. Preview the result, copy it or download the files.

What changes between YAML and Qt Linguist

  • Keys, texts, plural forms and placeholders are mapped one to one. Comments and descriptions are kept when both formats support them.

Convert and translate in one place

If you need the Qt Linguist file in more languages, the fastest route is a free SimpleLocalize project: import the YAML file, add languages, run auto-translation with DeepL, Google Translate, OpenAI, Claude or Gemini, and download the result as Qt Linguist. The CLI does the same from CI with upload and download commands, so the conversion becomes part of your build. See also translating YAML 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 Qt Linguist. Placeholders are kept, and Apple and Android specific syntax is translated between platforms. Read more in the pluralization guide.

Translate your Qt Linguist files

  • Import YAML or Qt Linguist 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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