What tools can be used to verify localization?

• Translation Management Systems (TMS): Lokalise, Phrase, Crowdin.

• Browser developer tools: changing language settings in the browser (e.g., DevTools in Chrome - Network conditions or Sensors for geolocation emulation), checking text display, date, number, and currency formatting.

• Device emulators and simulators: testing on different operating systems and screen sizes considering language settings.

• String checking tools in resources: finding duplicates, unfilled strings, syntax validation of formats (e.g., for placeholders).

• Automated UI testing tools (Selenium, Playwright, Cypress): writing tests to verify UI element display with localized text, checking string lengths, element overlaps.

• Browser/IDE plugins and extensions: Grammalecte, LanguageTool for grammar and spell check, Pootle, OmegaT for working with translation files.

• Scripts for parsing and analyzing localization files (in Python, JavaScript, etc.): automatic format validation, character count, pattern search.

Example of a Python script for basic JSON localization file check:

import json

def check_localization_file(file_path):
    try:
        with open(file_path, 'r', encoding='utf-8') as f:
            data = json.load(f)
            # Check for empty values
            for key, value in data.items():
                if not value:
                    print(f"Warning: Empty value for key '{key}'")
                # Example: check for placeholders (if used)
                # if "{name}" in value:
                #     print(f"Info: Placeholder {{name}}} found in key '{key}'")
    except FileNotFoundError:
        print(f"Error: File not found at {file_path}")
    except json.JSONDecodeError:
        print(f"Error: Invalid JSON format in {file_path}")
    except Exception as e:
        print(f"An unexpected error occurred: {e}")

# Usage example
# check_localization_file("path/to/your/localization_en.json")