What format are WhatsApp voice notes saved in?

Android and WhatsApp Web export voice notes as OGG Opus (.opus). iOS WhatsApp exports as MPEG-4 audio (.m4a). Both are natively supported by Grok STT — no conversion needed.

Can I transcribe directly from inside WhatsApp?

WhatsApp does not have a built-in transcription. You must export the voice note (Forward → Save to Files / Email) and then upload it to ScribeForge or another tool. Some Meta beta testers have a transcription feature for short notes — it is not generally available as of April 2026.

Will it work on my phone (mobile browser)?

Yes. ScribeForge is a web app — works on iPhone Safari, Android Chrome, Firefox, and any modern mobile browser. Forward the voice note to email or save it to the device, then drop it into ScribeForge in your browser.

Will the language be detected automatically?

Yes. Grok STT detects 25+ languages automatically — Italian, Spanish, French, English, Portuguese, German, Arabic, Hindi, Japanese, Mandarin and more. No need to specify.

Use case · Updated April 29, 2026

How to Transcribe a WhatsApp Voice Note — Free

Save the voice note, drop it into ScribeForge, read what your friend said. 10 seconds, no account.

Yes — any WhatsApp voice note can be transcribed for free in your browser. Forward the note to your own email (or save to phone storage), open the resulting .opus or .m4a, drop it into ScribeForge. Grok STT returns the text in 5–10 seconds, with automatic language detection across 25+ languages.

WhatsApp's voice note format

Source	File extension	Codec
Android WhatsApp	.opus	OGG Opus
iOS WhatsApp	.m4a	AAC
WhatsApp Web	.opus	OGG Opus

Both formats are natively supported by Grok STT — no conversion. Voice notes are typically a few seconds to a couple of minutes, always well under the 25 MB cap.

The 4-step workflow

Long-press the voice note in WhatsApp → tap Forward → choose Email (iOS), Save to Files (iOS), or Share → Save to Phone (Android).
Get the file onto your device — open the email attachment, or find the file in your Downloads / Documents folder.
Open ScribeForge at scribeforge.tech in your browser. Mobile or desktop.
Drop the .opus or .m4a onto the upload zone. Click Transcribe. Text in 5–10 seconds.

Why people transcribe voice notes

You're in a meeting and can't listen — read instead.
The note is 5 minutes long and you need the action item, not the rambling.
You're hard of hearing or have audio-processing differences — text is faster than re-listening 3×.
Translation — paste the transcript into Grok / GPT / Claude to translate.
Search later — voice notes aren't searchable; transcripts are.

Languages

Auto-detected, including: Italian, English, Spanish, French, German, Portuguese, Dutch, Arabic, Hindi, Japanese, Korean, Mandarin, Vietnamese, Turkish, Russian, Polish, Indonesian, Thai. Mixed-language notes (e.g. Spanglish) are handled — Grok STT switches mid-stream.

Common questions

Can I just transcribe inside WhatsApp?

WhatsApp doesn't have generally-available transcription as of April 2026. Meta has been testing it in some regions for short notes — not reliable. ScribeForge works regardless of WhatsApp's feature rollout.

Does it work on my phone browser?

Yes — Safari, Chrome, Firefox on iOS/Android. Forward the note to your own email, open the email on the phone, tap the attachment to download, then upload it to ScribeForge in the same browser.

Are voice notes private after upload?

Audio is sent to xAI's Grok STT API for processing and deleted immediately. ScribeForge does not retain the audio or the transcript past your browser tab.

What if the voice note is in a noisy environment?

Grok STT handles background noise well — train station announcements, traffic, café chatter — but accuracy degrades on heavy compression or very-low-volume voice. If a note comes back unclear, listen for the volume — boost with ffmpeg -i in.opus -af "volume=4dB" out.opus and try again.

Drop a WhatsApp voice note and read it in 10 seconds.

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