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Translation Management for software projects

The easiest way to manage translation files for web and mobile apps.

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SimpleLocalize CLI is a command-line tool that allows you to manage translations in your software project, and it's a great tool for CI/CD pipelines and localization automation.

  • Upload and download translations. The main purpose of the command-line tool is to upload and download translation files from Translation Editor to your project.
  • Auto-translate strings. Start auto-translation jobs from the command-line and get translated strings in a few minutes.
  • Hosted translations management. Push and pull translations from Translation Hosting to your project using the command-line.
  • GitHub Actions support. Use SimpleLocalize CLI in your GitHub Actions workflows.
  • Check project status. Get project details from the command-line and check if your translations are up-to-date.


The installation process is automated by command-line scripts. Both scripts for Windows (PowerShell) and macOS/Linux/Windows downloads a binary file with CLI, copies it to user files and makes it available to run anywhere in the system from a command-line.

# macOs / Linux / Windows (WSL)
curl -s | bash

# Windows (PowerShell)
. { iwr -useb } | iex;

To change or update the CLI version, run the installation script with the desired version number in the URL, e.g.:

  • installs version 2.0.6 on macOS/Linux/Windows (WSL)
  • installs version 2.0.6 on Windows (PowerShell)

See releases for the list of available versions.


The command-line tool offers several commands to execute. All of them requires --apiKey YOUR_API_KEY parameter that is unique for each project.

simplelocalize [command] ...parameters

Available commands:

  • init - creates a sample configuration file
  • status - gets translation project details
  • upload - uploads translation files or translation keys
  • download - downloads translation files
  • sync - uploads translation files and downloads translation files
  • auto-translate - starts auto-translation jobs
  • pull - downloads translation files from Translation Hosting
  • publish - publishes translations to Translation Hosting
  • purge - removes all translation, translation keys and languages from Translation Editor
  • extract - finds and extracts translation keys in your project files

Use --help parameter to get more information about the command and its parameters or check documentation.

Create configuration file

Command creates a sample configuration file in the current directory. The configuration file simplifies the usage of the command-line tool by providing a default configuration for the project and allowing to omit some parameters.

simplelocalize init

Upload translations

Command uploads translation files from given <UPLOAD_PATH_PATTERN> to Translation Editor, e.g.: ./src/translations/messages.json.

simplelocalize upload 
  --apiKey <PROJECT_API_KEY>
  --uploadPath <UPLOAD_PATH_PATTERN>
  --uploadFormat <UPLOAD_FORMAT>

You can use {lang} placeholder to specify language or locale and {ns} placeholder to specify namespace, e.g.: ./src/translations/{lang}/{ns}.json.

Upload format is a format of the file(s) with translations. See available upload formats

Additional parameters:

  • --replace allows you to replace existing translations with new ones.
  • --dryRun allows you to check what translation files will be uploaded without actually uploading them.
  • --uploadOptions allows you to pass additional options to the upload command. E.g.: --uploadOptions TRIM_LEADING_TRAILING_SPACES. To pass multiple options, use comma as a separator.

Learn more about upload translations command.

Example: One file with translations

└── locales
    └── messages.json


simplelocalize upload 
  --apiKey <PROJECT_API_KEY>
  --uploadPath /locales/messages.json
  --uploadFormat multi-language-json

Example: Single file in multiple language directories

├── ca
│   └── index.json
├── en
│   └── index.json
└── es
    └── index.json


simplelocalize upload 
  --apiKey <PROJECT_API_KEY>
  --uploadPath /{lang}/index.json
  --uploadFormat single-language-json

Example: Multiple files in multiple language directories

├── ca
│   ├── common.json
│   └── home.json
├── en
│   ├── common.json
│   └── home.json
└── es
    ├── common.json
    └── home.json


simplelocalize upload 
  --apiKey <PROJECT_API_KEY>
  --uploadPath /{lang}/{ns}.json
  --uploadFormat single-language-json

Download translations

Command downloads translation files from the Translation Editor to the given <DOWNLOAD_PATH_PATTERN>, e.g.: ./src/translations/messages.json.

simplelocalize download 
  --apiKey <PROJECT_API_KEY>
  --downloadPath <DOWNLOAD_PATH_PATTERN>
  --downloadFormat <DOWNLOAD_FORMAT>

You can use {lang} placeholder to specify language or locale and {ns} placeholder to specify namespace, e.g.: ./src/translations/{lang}/{ns}.json.

Download format is a format of the file(s) with translations. See available download formats

Additional parameters:

  • --downloadOptions allows you to pass additional options to the download command. Eg.: --downloadOptions WRITE_NESTED.
  • --downloadSort allows you to sort translations in the downloaded file. Eg.: --downloadSort NEWEST_KEYS_FIRST. Available options: NEWEST_KEYS_FIRST, NEWEST_KEYS_LAST, NAMESPACES, IMPORT_ORDER.

Learn more about download translations command.

Auto-translate strings

Auto-translate command starts auto-translation jobs for all languages in the project or for languages specified in --languageKeys parameter. Auto-translation configuration is taken from the last auto-translation job in the project for the given language.

simplelocalize auto-translate --apiKey <PROJECT_API_KEY>

Additional parameters:

  • --languageKeys allows you to specify project language keys to auto-translate, e.g.: --languageKeys en,de,fr.

Translation Hosting: Publish translations

It publishes translation to Translation Hosting. It behaves exactly the same as publish buttons in the SimpleLocalize (Hosting tab).

Publishes translations from Translation Editor to the _latest environment.

simplelocalize publish --apiKey <PROJECT_API_KEY> --environment _latest

Publishes translations from the _latest environment to _production environment.

simplelocalize publish --apiKey <PROJECT_API_KEY> --environment _production

Translation Hosting: Pull resources

Downloads all translation hosting files to given directory in --pullPath parameter. It overwrites existing files and creates subdirectories if necessary.

Pulls translations from the _latest environment.

simplelocalize pull --apiKey <PROJECT_API_KEY> --pullPath ./hosting/ --environment _latest

Pulls translations from the _production environment.

simplelocalize pull --apiKey <PROJECT_API_KEY> --pullPath ./hosting/ --environment _production

If you would like to filter files which should be downloaded you can use --filterRegex param, e.g.: --filterRegex '__index.json' will download only __index.json file.

Get project details

Command gets project details and prints them to the console.

simplelocalize status --apiKey <PROJECT_API_KEY>

Sync translations

Sync command combines upload and download command executions.

simplelocalize sync 
  --apiKey <PROJECT_API_KEY>
  --downloadPath <DOWNLOAD_PATH>
  --downloadFormat <DOWNLOAD_FORMAT>
  --downloadOptions <DOWNLOAD_OPTIONS>
  --uploadPath <UPLOAD_PATH>
  --uploadFormat <UPLOAD_FORMAT>
  --uploadOptions <UPLOAD_OPTIONS>

--downloadOptions and --uploadOptions parameters are optional.

Purge translations

Command removes all translations, translation keys and languages from Translation Editor.

simplelocalize purge --apiKey <PROJECT_API_KEY>

Additional parameters:

  • --force allows you to skip confirmation prompt.

Extract translation keys

Extract command finds and upload translation keys from project source code at <SEARCH_DIRECTORY> to SimpleLocalize.

simplelocalize extract 
  --apiKey <PROJECT_API_KEY>
  --searchDir <SEARCH_DIRECTOR>
  --projectType <PROJECT_TYPE> 

See available project types.

Configuration file

Use configuration file to simplify your bash command. Arguments used in command always override properties set in the configuration file. By default, SimpleLocalize will load configuration from file named simplelocalize.yml. You can load configuration from different location by using a -c parameters.

# Load default simplelocalize.yml file
simplelocalize upload

# Use configuration file at custom location
simplelocalize -c my-configuration.yml upload

Sample configuration file

Filename: simplelocalize.yml

# Get started with CLI:
# Available formats:
# Available import/export options:
# Support:

# Project API Key
apiKey: API_KEY

# Properties used by 'upload' command
uploadPath: ./src/{lang}/{ns}.json
uploadFormat: single-language-json
  # by default, the 'upload' command only adds new keys and fills empty translations, 
  # add this option to overwrite existing translations with values from the uploaded file

# Properties used by 'download' command
downloadPath: ./src/{ns}/messages_{lang}.json
downloadFormat: single-language-json

# Properties used by 'extract' command
searchDir: ./src
projectType: yahoo/react-intl
  - 'ABOUT-US'

# Properties used by 'pull' and 'publish' command    
pullPath: ./src/hosting/
environment: '_production' # or '_latest', or 'my_custom' 

Proxy support

SimpleLocalize CLI supports HTTP and HTTPS proxies, and it respects the http_proxy, https_proxy environment variables.

Here are some examples of how to set proxy environment variables in Linux and macOS:

export http_proxy=
export http_proxy=
export http_proxy=


Please refer to the official SimpleLocalize documentation. That should help you troubleshoot common issues. For additional help, you can reach out to us on one of these channels:


See LICENSE for more details.