Your WhatsApp OPUS voice messages, written out as readable text.
Upload the chat export once. ThreadRecap transcribes every voice message in order, so you can search, quote, and share what would otherwise stay locked in audio.
- Photos & videos stay on your device. Audio sent for transcription only if you opt in. If you select a video, your browser extracts and sends only its audio track for transcription; the video and its visual content stay on your device.
Hear it, then read it
Three voice messages, transcribed the way yours will be
Press play on any of them. The text underneath is what came back from the recording, in the same player and the same transcript block you get inside a recap.
- opus
- m4a
- ogg
- mp3
PTT-20250118-WA0023.opus
Transcription:
Hey, real quick about the meeting yesterday — I think we should go with the second option for the homepage. Yeah, the second one.
PTT-20250118-WA0024.opus
Transcription:
Oh, and can you send me the Figma link? I wanna show it to Sarah before our call tomorrow at three.
PTT-20250118-WA0025.opus
Transcription:
Ah, and the budget — it's approved! So we can move forward with the contractor this week, no problem.
Audio is only sent for transcription when you ask for it.
How it works
Export with media
Export the WhatsApp chat with media. This gives you a .zip with the OPUS voice messages inside.
Upload the ZIP
Upload the .zip. ThreadRecap finds every OPUS voice message and transcribes it in the language spoken.
Read the transcripts
Read each transcript in its original place, search the conversation, and use the recap to pull out key points, decisions, and actions.
What you get
Every voice message becomes readable text without losing its place in the conversation.
Why WhatsApp exports contain OPUS files
OPUS keeps voice messages small without giving up the clarity speech needs.
- Efficient — OPUS keeps audio files compact, so voice messages are quick to send and practical to store.
- Common in exports — when you export a chat with media, voice messages often appear as PTT-YYYYMMDD-WAXXXX.opus.
- ThreadRecap reads those files directly, writes them out in order, and keeps each transcript beside the messages around it.
Read every voice message in one pass
One export, not one upload per audio file.
Upload the full WhatsApp export once. ThreadRecap finds every OPUS voice message, transcribes it in order, and merges the text into the chat timeline. You can then search what was said and use the recap to find decisions, promises, and actions without replaying the recordings.
Key benefits
Every OPUS voice message in the export, handled directly
One upload for the whole conversation, not one file at a time
Searchable, quotable text beside the written messages
Conversation order and surrounding context kept in the timeline
OPUS, OGG, M4A, and MP3 handled in the same flow
Recap and follow-up questions cover what was said aloud
Use cases
Work
Client updates, instructions, and approvals sent by voice message.
Disputes
Spoken promises you need to find and quote with their date.
Personal
Long voice threads into searchable text.
Catching up
A group that left you dozens of voice messages.
Questions? Answered.
Privacy and security
Parsing happens in your browser; only necessary data is sent.
Stored on our servers. Delete chat, audio, and analyses anytime from your dashboard.
Photos, video files, and their visual content never leave your device. For transcription, we send chat text and selected audio, including an audio track your browser extracts from a video.
Related
WhatsApp Voice to Text
Every voice message in the export written out, in order, beside the messages around it. OPUS, OGG, M4A and MP3.
OGG to Text
Transcribe the OGG voice files in a WhatsApp export. No converting or renaming first.
WhatsApp Audio to Text
Every audio message in the chat transcribed onto one timeline, with a summary of what was said.
Use cases
Organized by theme and relevance: core workflows, disputes, voice, export guides, and group use cases. Pick what you need.
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