Local · Realtime · No cloud
Trans
Speak English. Stream Português.
Trans listens to your mic, recognizes your speech with a local Whisper model, translates it on the spot, and writes Portuguese captions onto your stream — word by word, while you're still talking.
English + Português, or either alone
v1.0.0 · Windows · runs entirely on your PC
How it works
Every step runs on your machine. Nothing is uploaded, nothing is metered — stream for ten hours, it costs the same as ten minutes: nothing.
Everything in the box
Built for streamers who talk fast and play games with weird words in them.
Realtime captions
Words appear on stream about a second behind your voice, typing live while you're still mid-sentence — then snap to a clean final when you pause.
Best-in-class recognition
Powered by Whisper, up to large-v3 — the most accurate open speech model there is. Pick from seven models in one click, no restart.
Custom vocabulary
Teach it your world: exura ico, utevo gran lux, Thais. Obscure spells, names and slang come out spelled exactly right.
Three overlay styles
A clean caption card, broadcast-style TV closed captions, or a pixel-faithful Tibia chat window that sits right on top of the real one.
Visual overlay designer
Live preview on a real 1920×1080 canvas. Drag the captions anywhere, scale them, pick fonts and colors — copy one URL into OBS and you're done.
Time to actually read
Auto-hold scales with caption length, or keep the last words on screen until new ones replace them. Long pauses start fresh lines, not run-ons.
100% local. 100% free.
Speech recognition and translation both run on your PC. No cloud, no API keys, no per-minute fees, nothing leaves your machine.
Tune it live
Sentence debounce, run-on limits, realtime refresh rate — all sliders in a web panel, applied mid-stream without restarting anything.
OBS-native
A transparent browser source that composites straight over your scene. Works with any resolution, any layout, multiple scenes at once.
Live in three steps
Run install.bat
One time. It sets up Python and downloads the speech + translation models (all local).
Run start.bat
The control panel opens in your browser. Pick your mic, hit Start listening.
Add the overlay to OBS
Design it in the panel, copy the URL into a Browser source. Speak English — stream Português.