OGG to text — drop the whole WhatsApp export and get every voice file written out.
OGG is the container WhatsApp voice messages travel in. Upload the .zip as it came off your phone and each file comes back as text, in order, on the chat timeline.
- Photos & videos stay on your device. Audio sent for transcription only if you opt in.
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 the WhatsApp chat with media. Voice files arrive as .ogg or .opus, usually named PTT-YYYYMMDD-WAXXXX.
Upload the .zip whole. Every OGG file inside is found and transcribed — no unzipping, renaming or converting first.
Read the transcripts in the timeline, then run a summary for the decisions, dates and action items inside them.
What you get
OGG in, readable text out — with the chat around it kept intact.
OGG, OPUS, and why WhatsApp uses both names
They are not two different things, which is why one upload handles both.
- OGG is a container — a wrapper that holds audio. OPUS is the codec, the compression inside the wrapper. A WhatsApp voice message is usually OPUS audio in an OGG container, so the same file is correctly called both.
- Which extension you see depends on the phone and the export. Some exports write .ogg, others write .opus, and a few arrive as .m4a — the recording is the same either way.
- Whichever name your export used, the file is read the same way — and its real length is measured from the audio itself rather than guessed from the file size, so what you are quoted matches what you actually have.
Every voice file in one pass
Long chats hold hundreds of them.
Upload the full export and every OGG voice file is transcribed in order and merged into the message timeline, so a spoken reply reads in its place instead of sitting in a folder. The initial recap pulls out what was agreed, and follow-up chat can focus on a specific question.
Key benefits
OGG voice files read straight from the export — no converter step
OPUS, OGG, M4A, and MP3 handled by the same upload
Duration measured from the audio itself, so the price you are quoted is the real one
Transcripts merged into the chat timeline, in order, with their timestamps
Summaries and action items drawn from what was spoken, not just typed
Works with 1:1 and group exports, from iPhone and Android
Use cases
Work voice messages
Client updates, instructions and project syncs, in writing.
Disputes
A spoken agreement quoted with the date it was recorded.
Personal
Months of long voice threads turned into something searchable.
Chat exports
A WhatsApp export full of OGG files and no way to read it.
Questions? Answered.
Privacy and security
Parsing happens in your browser; only what is needed for analysis is sent.
Stored on our servers. Delete chat, audio and analyses anytime from your dashboard.
Photos and videos never leave your device. Only chat text and voice audio (for transcription) are sent.
Related
OPUS to Text
Batch transcribe WhatsApp OPUS voice messages. Transcript + summary in minutes.
WhatsApp Audio to Text
Every audio message in the chat transcribed onto one timeline, with a summary of what was said.
WhatsApp Voice to Text
Every voice message in the export written out, in order, beside the messages around it. OPUS, OGG, M4A and MP3.
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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