Convert audio and video to text directly in your browser. Start free with 100% on-device processing, then unlock Lifetime Pro with a one-time purchase.
Ready to transcribe?
Drag & drop audio files here, or click “Select File”.
Tip: keep this tab open and active during transcription to avoid browser throttling on long files.
Simple, private transcription in 3 steps
Select or drag MP3, WAV, M4A, MP4 and more.
Runs on your device with WebGPU/WebCPU.
Export TXT, SRT, VTT, or JSON.
Privacy-first local AI transcription, with free and one-time license options.
Media processing is local. Your files are never sent to our backend.
Start instantly without cloud transfer waiting.
No server-side file-size cap for file length.
Automatically adapts between WebGPU and WebCPU based on your hardware.
Speech-to-text for real production scenarios, not just demos.
Turn interview recordings into searchable draft text, pull quotes faster, and keep source material private.
Process qualitative interviews into analyzable transcripts with consistent speech-to-text output.
Convert lectures and voice notes to text for review, study guides, and fast revision before exams.
Repurpose podcasts and videos into captions, posts, and subtitle files for multi-channel publishing.
Guides for MP3 to text, WAV to text, and MP4 to text with the same private local workflow.
Convert podcasts, interviews, and voice notes into clean text without uploading media to a cloud transcription server.
MP3 WorkflowProcess lossless audio recordings with local AI and export transcript files for editing, research, or documentation.
WAV AccuracyTurn video interviews and meeting recordings into searchable transcript text and subtitle-ready output formats.
MP4 WorkflowGuides for offline speech to text, offline subtitle generation, and on-device transcription.
Use this workflow for speech to text offline, voice to text offline, and local speech recognition.
Offline GuideGenerate SRT and VTT subtitles from local media with private on-device processing.
Subtitle WorkflowExplains and validates local browser transcription architecture for privacy-sensitive and no-upload workflows.
Privacy-firstBuy once, keep forever. No account required.
For everyday use
Yes. Audio and video are processed locally in your browser and are never sent as transcription payload.
Common formats such as MP3, WAV, M4A, and MP4 are supported, plus other standard media types.
No server file-size cap is imposed by us. Practical speed depends on your device resources.
Yes. Export SRT and VTT, as well as TXT and JSON.
Yes. After the model is downloaded and cached once, transcription can run offline.
If you prioritize privacy-first local processing and one-time payment, OfflineTranscriber is a stronger fit. Otter.ai is cloud-based and subscription-oriented.
OfflineTranscriber processes media locally on your device, so you are not constrained by server upload limits. Performance depends on your hardware.