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Voice & transcription

Your WhatsApp OPUS voice messages, written out as readable text.

Drop one voice message below and read it back, free. For the whole chat, upload the export once and ThreadRecap writes out every voice message in order.

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  • Interface in 6 languages

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.

  • opus
  • m4a
  • ogg
  • mp3
  • aac
  • wav

AI-generated voices: nobody's real voice is published here.

Marcus

3 voice messages · transcribed

Marcus

0:00

Transcription:

Hey, about yesterday's meeting: I think we should go with the second option for the homepage. Yeah, the second one.

PTT-20250118-WA0023.opus2:02 PM
0:00

Transcription:

Deal, I liked that one better too. Can you send me the Figma link? I want to show Sarah before our call tomorrow at three.

PTT-20250118-WA0024.opus2:04 PM

Marcus

0:00

Transcription:

Sending it now. And the budget's approved! We can close with the contractor this week, no problem.

PTT-20250118-WA0025.opus2:06 PM

In numbers

Chats as long as yours

Counted in October 2026, rounded down.

110,000+voice messages

read instead of replayed

20+hours

of voice messages in one chat

5+years

of messages in one chat

How it works

1

Export with media

Export the WhatsApp chat with media. This gives you a .zip with the OPUS voice messages inside.

2

Upload the ZIP

See the exact price on the upload screen. Unlock the full conversation only when it is worth it.

3

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

The converter above takes one file. The export takes all of them.

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 file free here, or the whole conversation in one upload

Searchable, quotable text beside the written messages

Conversation order and surrounding context kept in the timeline

OPUS, OGG, M4A, MP3, AAC, and WAV 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.

OPUS is an open, royalty-free audio codec. WhatsApp uses it for voice messages, so when you export a chat with media, they often appear as .opus files (for example, PTT-20250124-WA0001.opus). ThreadRecap transcribes them and puts the text back into the chat timeline.

No. Upload the WhatsApp export .zip as it is. ThreadRecap detects the OPUS files, transcribes them, and merges the results into the conversation. You do not need a separate converter.

Yes. Upload the full export once and ThreadRecap processes every OPUS voice message in the .zip. Each one is transcribed in order and merged into the message timeline, where the recap can include what was said aloud.

We support OPUS, OGG, M4A, MP3, AAC, and WAV when they appear in your export. OPUS is a common format for WhatsApp voice messages.

Audio is sent encrypted for transcription. You can delete audio, chats, and analyses anytime from your dashboard. See our Privacy Policy.

Yes. The transcripts become part of the same conversation recap, which pulls out the main points, decisions, promises, and action items. You can also ask follow-up questions about a particular message, date, or name.

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 the audio of every voice message, including the audio track your browser extracts from each video.