Konvizi
Free No upload
Keep only the part you want from an MP3, a WAV or a voice memo, to a tenth of a second, without uploading anything.
Drop your MP3, WAV, M4A files here
or
Your files stay on your device
Konvizi’s “Cut Audio” tool is free, with no sign-up, no watermark and no file limit. All the processing happens in your browser, on your device: your files are never uploaded to a server, which makes it suitable for personal and confidential documents.
Drag your MP3, WAV, M4A, OGG or FLAC into the box above or click “Choose files”.
Listen in the player, then type the times (for example 0:45 and 1:30) or click “Player position”. Click “Cut”.
The clip is saved as MP3 (a WAV stays a WAV) and is ready to download.
Making a ringtone, sharing a clip from a song or podcast, removing a long silence at the start of a recording, or isolating part of a meeting. Listen to the file in the player, note the start and end times (or use “Player position”), and Konvizi saves the clip, with a very short fade at both ends to avoid clicks.
Konvizi accepts common audio formats: MP3, WAV, M4A and AAC, OGG and Opus, FLAC. The clip is saved as MP3; a WAV file stays a WAV, with no loss.
Voice memos, meeting recordings, music: the sound is decoded and re-encoded by your browser, with no upload. No waiting while a big file uploads, and no private recording ends up on a server.
Your files never leave your device. No upload, no storage.
No upload and no queue: the conversion starts right away.
As many files as you like, with no imposed size limit.
No sign-up, no watermark, no subscription.
| Konvizi | Typical online converter | |
|---|---|---|
| Where your files are processed | In your browser, on your device | On the service’s servers |
| Upload to the internet | None | Required, then you download the result |
| Storage of your files | None: nothing is stored | Stored on a server, at least while processing |
| Waiting time | Starts instantly | Upload time, sometimes a queue |
| Account | Never required | Often required beyond a few files |
| Watermark and limits | No watermark, no maximum number | Common on free plans |
Yes, completely: no sign-up, no audio watermark, no limit.
No. Everything happens in your browser, on your device. Your files are never sent over the internet: nobody but you can see them.
MP3 at 192 kbps, which plays everywhere. If you start from a WAV file, the clip stays a WAV, with no loss of quality.
Keep a part of 30 seconds or less. On Android, pick the MP3 in the ringtone settings (or copy it to the “Ringtones” folder). On iPhone, ringtones go through GarageBand, which accepts this MP3.
Open your browser’s developer tools (F12 key), go to the “Network” tab and run a conversion: no request carries your file. The site also enforces a security rule (Content-Security-Policy) that forbids the browser from contacting any site other than konvizi.com, and konvizi.com is a static site with no service able to receive files.
Yes. Konvizi works in the browser of your phone or tablet (Safari, Chrome…) just like on a computer, with no app to install. Very large files are processed faster on a computer, which has more memory.