Audio Transcription
Studio-grade AI transcription for MP3, WAV, and M4A — runs in your browser, audio never uploaded.
Drop in an MP3, WAV, M4A, or OGG file and get an accurate transcript powered by Whisper — the same AI architecture behind professional transcription services — running entirely inside your browser. The first run downloads the AI model once (it is then cached); after that, transcription works even offline. Your recordings are never uploaded, which makes this one of the only transcription tools safe for confidential interviews, medical dictation, legal notes, and unreleased content.
Choose plain text for documents, timestamped text for reviewing long recordings, or SRT/VTT files ready for video subtitles. Three quality levels let you trade speed for accuracy, and on browsers with WebGPU (Chrome and Edge) transcription is dramatically accelerated by your graphics hardware.
How to transcribe audio to text
- 1
Drop your audio file onto the tool and pick a quality level — the AI model downloads once and is cached for next time.
- 2
Click Transcribe and watch segments appear as the audio is processed locally.
- 3
Copy the text or download it as TXT (with or without timestamps), SRT, or VTT.
Why use Nofolo’s audio transcription?
Nothing is uploaded
The AI runs locally in your browser. Interviews, meetings, and dictations never touch a server — verifiable in the network tab.
Whisper-class accuracy
Built on the Whisper speech-recognition architecture used by professional transcription products, with three accuracy levels.
With or without timestamps
Export clean paragraphs, timestamped segments, or subtitle-ready SRT and VTT files.
90+ languages
Automatic language detection, or pick the language explicitly for best results — including accented English.
WebGPU accelerated
On Chrome and Edge the model runs on your GPU for near-real-time speeds. Other browsers fall back automatically.
No length limits or fees
No per-minute billing, no monthly caps, no signup — transcribe hours of audio for free.
Frequently asked questions
Is my audio uploaded to a server?
No. The speech-recognition model runs inside your browser using WebAssembly or WebGPU. After the one-time model download, you can disconnect from the internet and transcription still works — nothing you transcribe is ever transmitted.
How accurate is the transcription?
It uses the Whisper architecture, which powers many paid transcription products. On clear speech, the Accurate setting is comparable to professional AI transcription services. Heavy background noise, crosstalk, and strong dialects reduce accuracy — as they do for every transcription tool.
Why does the first transcription take longer?
The AI model (roughly 40–250 MB depending on the quality level) downloads on first use and is cached by your browser. Every later transcription skips the download and starts immediately.
Can I get subtitles instead of plain text?
Yes — export as SRT or VTT and the timestamps are formatted for video players, YouTube uploads, and editing software. The timestamped-text option is better for reviewing meetings and interviews.
What audio formats are supported?
MP3, WAV, M4A, OGG, FLAC, and most other formats your browser can play. If a file fails to decode, convert it to MP3 or WAV first and try again.
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