Now in early access

Speak once.
Sign to everyone.

Bridgn translates spoken and written language into sign language animations — making education, lectures, and everyday conversation accessible to Deaf and hard-of-hearing communities.

BSL
British Sign Language
On-device
Speech recognition
Free
Always for educators
✏️ Text
🎙 Voice
🎬 Video
🤟
Sign animation appears here
CWASA renderer ready Open full app →
What we offer

Built for real classrooms
and real conversations.

🎙️
Voice-to-Sign

Record speech directly in your browser. On-device Whisper model transcribes locally — no audio ever leaves your device.

📝
Text-to-Sign

Type any sentence and watch it rendered into SiGML sign animations via the CWASA avatar engine.

🎬
Video Lectures

Upload a recorded video and Bridgn extracts the audio, transcribes it, and sequences the sign translation automatically.

🔬
STEM Vocabulary

Pre-loaded with scientific abbreviation packs. "Carbon dioxide" becomes "CO₂" before planning — no manual editing needed.

Instant Planning

Our NLP pipeline normalizes input into sign-order tokens using spaCy, heuristics, or OpenAI — with transparent fallbacks.

🌍
Open & Extendable

Community volunteers can contribute sign glosses and database entries directly. The more people contribute, the richer it gets.

Three steps.
Zero friction.

01
Input your words

Type text, record your voice, or upload a video file. Bridgn supports all three input modes in a single session.

02
NLP tokenisation

Your text is normalised, stripped of stopwords, and mapped against our sign database using a tiered planning pipeline — exact match → concept map → fuzzy → fingerspelling.

03
Live sign animation

Matched glosses are assembled into SiGML and played instantly via the CWASA signing avatar. The whole pipeline runs in the browser.

Help us grow the dictionary.

Bridgn's sign database is built by volunteers. If you know sign language, work in education, or just want to help, you can contribute new glosses, test translations, or report gaps — right from your browser.

Become a volunteer →