Audio and video to text. Free and private.

AI runs inside your browser on your own CPU. No upload, no GPU, no sign-up, no subscription.

100% freeNo upload~99 languagesTXT, SRT, VTT

How this transcriber works

voice.speakmi uses OpenAI's open-source Whisper speech recognition model, compiled to run in your browser with WebAssembly. The model downloads once, is cached, and then works on your device without sending audio anywhere. No graphics card is needed.

Add your file

Choose an interview, lecture, voice message, podcast, or video. Audio is extracted locally.

Pick a model

Fast suits clear speech. Balanced handles accents, noise, and names better.

Export the text

Copy the transcript or download TXT, SRT, and VTT subtitle files.

Why local transcription is different

Most online converters upload your recording, process it on paid GPU servers, and charge a subscription to cover the cost. Because the work happens on your own device, voice.speakmi has no per-minute fees and no privacy trade-off. It suits confidential meetings, student interviews, journalism, and personal voice notes.

For best results use clear audio, reduce background noise, and select the spoken language manually. Read our full transcription guide for more tips.

Guides

How to Transcribe Audio to Text for Free Without Uploading Your FilesA practical guide to turning recordings into text for free, privately, using AI that runs in your browser.How to Convert WhatsApp Voice Notes to TextSave a WhatsApp voice message and turn it into readable text in a few steps, privately and for free.How to Create SRT and VTT Subtitles From Any VideoGenerate timestamped subtitle files from a video using free browser-based speech recognition.How Accurate Is AI Transcription? What Really Affects the ResultsUnderstand how accurate AI speech-to-text is, why errors happen, and how to get cleaner transcripts from your own recordings.How to Transcribe an Interview for Research, Journalism, or a ThesisA step-by-step workflow for transcribing interviews: consent, recording tips, verbatim versus clean text, and protecting participants.How to Convert an MP4 Video to Text (and Shrink the File First)Turn an MP4 video into a transcript, with tips for extracting audio and reducing file size so the conversion is fast.How to Transcribe Indonesian Audio to Text (Including Mixed Indonesian and English)Practical tips for transcribing Bahasa Indonesia recordings: language settings, slang, code-switching, and proofreading.Local vs Cloud Transcription: Privacy, Cost, Speed, and Accuracy ComparedAn honest comparison of in-browser transcription and cloud transcription services, so you can pick the right tool for each job.How to Transcribe Meetings and Turn Them Into Useful NotesA simple routine for recording, transcribing, and summarizing meetings, with privacy tips and a template for action items.Why You Should Transcribe Your Podcast (and How to Do It)Learn how podcast transcripts improve accessibility, search visibility, and content reuse, and how to publish one properly.How Students Can Turn Lecture Recordings Into Study NotesA study workflow for transcribing lecture recordings and converting the text into notes, flashcards, and practice questions.How to Improve Audio Quality Before You TranscribePractical recording and cleanup tips that make speech recognition more accurate, from microphone distance to noise reduction.Speech to Text and Accessibility: Why Captions and Transcripts MatterUnderstand who benefits from captions and transcripts, what accessibility guidelines expect, and how to publish accessible audio and video.Transcript vs Subtitles vs Captions: What Is the Difference?A clear explanation of transcripts, subtitles, and closed captions, the file formats they use, and when to choose each.

Frequently asked questions

Is my audio uploaded to a server?

No. Transcription runs entirely in your browser. Only the AI model files are downloaded, and your recording never leaves your device.

Is it really free?

Yes. There are no accounts, credits, or subscriptions. The site is supported by advertising.

Why is the first run slower?

The first time you use a model, your browser downloads it (about 40 MB for Fast and 75 MB for Balanced). After that it is cached.

Why are there file size limits?

Everything runs on your own processor, not a GPU or server. Limiting files to 25 MB and 20 minutes keeps it fast and stable on laptops and phones.

Which languages are supported?

Whisper supports about 99 languages. Choose yours in the list or leave auto-detect on. Accuracy varies with audio quality and language.

Can I make subtitles for a video?

Yes. Download the SRT or VTT file and load it in YouTube, VLC, CapCut, Premiere Pro, or any editor.