Audio to Text
Transcribe audio files to text using Whisper AI
Upload Audio File
Drag & drop or click to select
Supported: MP3, WAV, OGG, Opus, WebM, AAC, FLAC, WhatsApp Audio
Settings
Processing happens 100% locally in your browser
How it works
- 1.Drop or select audio files from your device
- 2.Choose language and quality settings
- 3.Click "Transcribe" to convert
- 4.Download your transcribed text instantly
The entire process takes just seconds. Our audio transcriber uses advanced AI technology to convert speech to text directly in the browser.
100% Local Processing
Your audio files are processed entirely in your browser using JavaScript and WebAssembly.
What happens when you click "Transcribe"?
- 1.AI Model Download (one-time, ~50-150MB): The Whisper AI model is downloaded to your browser and cached locally. This is a DOWNLOAD, not an upload of your files!
- 2.Audio Decoding: Your audio file is decoded locally using Web Audio API.
- 3.Transcription: The AI processes your audio chunk by chunk, entirely in your browser.
- 4.Result: Text is generated locally - nothing ever leaves your device!
This makes TrustAudio ideal for sensitive recordings, confidential meetings, legal interviews, medical dictations, and personal voice notes that require strict privacy.
No uploads – No servers – GDPR compliant – Works offline (after first use)
Use Cases
- –Transcribe WhatsApp voice messages (.opus, .ogg)
- –Convert meeting recordings to notes
- –Create subtitles for videos
- –Transcribe interviews and podcasts
- –Convert lecture recordings to text
Supported Audio Formats
All common audio formats are supported. WhatsApp voice messages (.waptt, .opus) work directly!
No file size limits, no watermarks, no registration required. Completely free and unlimited.