FAQ
Is this converter private?
Yes. The conversion happens on your device (in your browser). Your file is not uploaded to a server.
Why does WhatsApp audio come as .opus?
WhatsApp uses efficient audio compression to keep voice notes small. OPUS is common for voice
messages.
Will this work on iPhone Safari?
It often works, but for best results use Chrome or Edge on desktop. Mobile browsers have tighter
memory limits.
It gets stuck on “Loading converter engine”. What do I do?
The first run downloads the converter engine into your browser. Try a stable connection, wait a bit,
and avoid private/incognito mode.
The conversion failed. Why?
Common causes: very large files, low device memory, or unsupported audio containers. Close other
tabs/apps and try again.
Does this work for .ogg too?
Yes, in many cases. WhatsApp voice notes may also appear as OGG containers with OPUS audio.
Is this free?
Yes. You can convert voice notes for free, right in your browser.
Can I convert multiple files at once?
Not yet. Batch conversion may be added later if there’s demand.