Transcribe Audio Without Uploading
Turn speech into text and subtitles with on-device AI — for audio and video files. Everything is transcribed entirely in your browser, so your file is never uploaded to a server.
How it works
Drop in an audio or video file
On-device AI transcribes it locally
Copy the text or download .txt / .srt
About this tool
This is a free way to transcribe audio without uploading it anywhere. It turns spoken audio — and video — into text and ready-to-use subtitles using OpenAI's Whisper speech model running entirely inside your browser. It's built for podcasters, students transcribing lectures, journalists working through interviews, and creators who need captions for a video. Unlike the typical “free” transcription site, your recording is never uploaded to a server: the AI model downloads to your device once and then does all the work locally, which is why it's safe for confidential interviews and private recordings, and why there are no per-minute limits or watermarks. Download the plain-text transcript or a timestamped .srt subtitle file. A modern device with WebGPU runs it fastest, but it works on any current browser. This is an early version — accuracy is best on clear speech, and very long files take longer on slower machines.
New to this? Read the guide: how to transcribe audio without uploading it.
Why use this tool
Speech to text + subtitles
Get a clean transcript and a timestamped .srt subtitle file from any audio or video with speech.
Private by default
The AI model runs on your device — your recording is never uploaded, so it's safe for confidential interviews.
No limits, no signup
No per-minute caps and no watermark; the model is cached after the first run so it starts instantly next time.
Common use cases
- Transcribe an interview or podcast episode
- Caption a video with a downloadable .srt
- Turn a lecture or meeting recording into notes
- Pull quotes from a voice memo
Frequently asked questions
Use this tool — it runs an on-device AI speech model (Whisper) right in your browser. You add your file, it is decoded and transcribed locally, and the audio is never sent to any server. That is what lets you transcribe audio without uploading it anywhere.
Yes. The video's audio track is decoded in your browser and transcribed locally, so the video file never leaves your device either. You get the transcript and optional .srt subtitles.
No. The AI speech model runs entirely in your browser, so your file is never uploaded. The model is served from this site itself (not a third-party) and cached after the first use — nothing goes to an external provider.
Common audio (MP3, WAV, M4A, OGG) and video (MP4, WebM, MOV) files with an audio track. The audio is decoded locally and fed to the model.
Yes. Alongside the plain-text transcript, you can download a timestamped .srt subtitle file ready to load into a video player or editor.
The first time you transcribe, the AI model downloads to your browser (one time only). After that it's cached and starts instantly. A device with WebGPU (most modern desktops) is significantly faster.
It uses OpenAI's Whisper model, which is strong on clear speech in many languages. Accuracy drops with heavy background noise, overlapping speakers or very low-quality audio.
Yes. No signup, no per-minute caps and no watermark. Because it runs on your own device, there are no server costs to pass on.
Related tools
Guides & how-tos
Step-by-step tutorials that use this tool.
Explore more free tools
Every category runs free in your browser — nothing is uploaded.