Bilingual Technology Toolkit

Practical guidance for building better bilingual digital services

Welsh Government Digital Services

About the Toolkit

Commissioned by the Welsh Government, this toolkit was developed by LinguaSkin (Interceptor Solutions Ltd) to translate the comprehensive guidance from the Welsh Language Commissioner into an accessible, actionable format for digital projects and procurement teams.

It is designed for anyone commissioning, designing or developing software — particularly public sector bodies in Wales — who want to ensure their applications and platforms deliver a consistently high-quality experience in both Welsh and English.

The toolkit covers essential areas including:

  • Planning bilingual digital services
  • User experience design for bilingual interfaces
  • Technical implementation strategies
  • Content management best practices
  • Testing and quality assurance
  • Accessibility considerations
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Key Benefits
  • Evidence-based guidance
  • User-centered approach
  • Technical best practices
  • Measurable outcomes

What's Inside

The toolkit breaks down bilingual considerations into clear requirements you can copy into a procurement spec or internal checklist, covering:

Non-functional requirements
  • Treat bilingual capability as essential from day one
  • Equal design and language provision across all updates and tools
User Interface & Language Switching
  • Language selectors must be consistent and always visible
  • No preference or default to English
Testing & Quality Assurance
  • Welsh versions must meet the same standards as English
  • Language-switching must preserve user context and content
Character Encoding & Localisation
  • Full support for all 56 Welsh characters
  • Correct sort orders, place names, and metadata in both languages
Outputs & Reports
  • Emails, reports, and mail merges must honour language preferences
  • Accessibility and screen reader support must be equal
Maps & Geographic Information
  • Use bilingual place names and PAF datasets wherever possible


Let's discuss how LinguaSkin can help you deliver a fully multilingual experience for your software

Extend your services with seamless language support — without code changes, service disruption, or lengthy development.