A real-time sign language API that turns English text into instant British Sign Language (BSL) videos using AI
Designed for speed, scale, and accessibility, it's the easiest way to embed BSL into your platform.
Use Cases
Events
- Instant on-screen signing for talks and panels
Broadcast
- Signed live updates
Retail and Venues
- Digital signage with accessible messaging
EdTech and SaaS
- On-demand BSL content in chatbots or training portals
Transport
- Real-time BSL for departure boards and service updates
Security and Compliance
- HTTPS encryption for all API calls
- JWT authentication for secure access
- Regular penetration testing
- Webhook support for automation
- Meets accessibility and security standards for public sector use
Test short phrases instantly and watch our digital signer, Rae, sign them instantly
Why Sign Language,
Not Just Subtitles?
Subtitles are helpful, but they're not enough. For many Deaf people, sign language isn't just a translation; it's their first language. It carries grammar, emotion, and cultural meaning that text simply can't capture.
That's why SignStream doesn't just add words to a screen; it brings the message to life in British Sign Language.
Because real accessibility means speaking the language people actually use.
Download our latest whitepaper
Why Subtitles Aren't Enough: The Case for Sign Language Access
Subtitles are useful but they’re not true access. For millions of Deaf people, British Sign Language (BSL) or American Sign Language (ASL) isn’t just a helpful feature. It’s their native language. That means relying on text-based solutions like subtitles or captions can leave them confused, disengaged, or completely excluded.
This whitepaper explains why and what you can do about it.
It’s clear, practical, and packed with real-world examples that bring the issue to life. We walk through the challenges Deaf people face when subtitles are treated as a one-size-fits-all solution, especially in live events, video content, education, and public announcements. We also explain why so many subtitling tools (like live auto-captions) fail to meet the mark.
Download the whitepaper today and start creating content that speaks everyone’s language.
Book a Demo today
Break Barriers, Build Access:
The Future of Digital Inclusion
Ensure Compliance
Meet WCAG, ADA, and Equality Act 2010 standards with ease.Empower Everyone
Make your message accessible to Deaf and hard-of-hearing audiences.Streamline Accessibility
Simplify inclusion with our easy-to-use platform.
Boost Safety and Convenience: Provide Deaf individuals with improved access to vital information, ensuring their safety and enhancing their travel experience.
Promote Independence: Empower Deaf people by reducing their reliance on others, fostering a sense of independence and confidence in navigating public spaces.
Download our latest whitepaper:
Unlock the Future of Digital Accessibility - How Sign Language Can Transfrom Your Business
Discover how embracing sign language accessibility can revolutionise your business and drive inclusivity. This whitepaper explores the growing demand for accessible communication, the transformative potential of AI-powered sign language solutions, and actionable strategies for implementation.
Learn from case studies, industry insights, and best practices to create a more inclusive experience for Deaf customers, employees, and stakeholders. Download now to unlock the benefits of accessibility and stay ahead in a world where inclusivity drives innovation.
Real customer experiences
"At CVG, Signapse enables us to provide a more inclusive travel experience for Deaf passengers. Signapse’s ASL messages on our flight screens, airport tram information, and upcoming boarding gate announcements alleviate travel anxieties and create an intuitive journey. We foresee this technology becoming standard across airports, promoting universal accessibility."
Hannah Meredith
Senior Manager of Strategic Innovation at CVG
Features
Using Artificial Intelligence is the only way to generate live information in sign language straight to your Deaf users.
Simple and smart API integration available to fit translations into your work-flow
Translations generated within 2 seconds with transparent or coloured backgrounds.
How does it work?
01
Documentation
02
API Integration
Generate sign language translations by integrating with our RESTful API that returns videos in less than 2 seconds.
03
Translations in your Workflow
Provide accessible translations directly in your applications, such as digital screens or mobile apps.
Be a part of the change.
Let’s work towards a more inclusive and equitable society, valuing the diverse needs of all its members.
Looking to make your transport announcements more accessible to the Deaf community?
FAQs
Submitted videos must be in one of the following formats: ".mp4" & ".mov"
While we are not currently able to support the translation of on-the-fly messages, this is a capability we are working towards.
We currently support the translation of English text into British Sign Language (BSL) or American Sign Language (ASL). We plan to support additional languages and sign languages in the future.
