Your browser opens the file.
The sound is decoded by your browser's own decoder at 44.1 kHz, the sample rate of a CD.
SOLIPSIUM Super resolution audio engine
Free audio tool
Convert any audio file your browser opens to MP3 or WAV, and see which browser opens which format.
Drop a FLAC, an AIFF, a 3GP or another audio file, and your browser saves it as an MP3 or a WAV on this device. The table below names the browsers that open each format.
Drop an audio file here
Your browser converts it to MP3 or WAV on this device. It stays on your device until you ask for a repair.
FLAC, AIFF, CAF, 3GP, Ogg, WebM, MOV and more, up to 30 minutes or 200 MB.
Ready to convert
The MP3 folds this file's channels into stereo; the WAV keeps every channel.
Is the recording itself clear?
Converting does not clean the sound. Solipsium's free try is built for speech: the check below looks in your browser for background noise, hum, clipping, dropouts and muffled sound, and you can hear the first 20 seconds of a voice recording repaired with no account.
Your first 20 seconds
After signing up, drop the same file into the editor to repair all of it.
What Solipsium hears
Make a free account to repair the whole recording
Then drop the same file into the editor. Scans and short repairs are free.
Formats
Which browser opens which format.
Each browser carries its own decoders, so a file that opens in Safari can fail in Chrome. These rows come from the browsers' own source code. The last column says whether Solipsium's server opens the format when your browser cannot.
| Format | Browsers | Solipsium's server |
|---|---|---|
| WAV, MP3, FLAC.wav, .mp3, .flac | WAV, MP3 and FLAC files open in every current browser. | Opens it |
| M4A, MP4.m4a, .mp4, .m4v, .m4b | M4A and MP4 files open in Chrome and Firefox, and usually in Edge and Safari; an M4A saved in Apple's ALAC format opens only in Safari. | Opens .m4a and .mp4 |
| Ogg, Opus.ogg, .oga, .opus | Ogg and Opus files open in Chrome, Edge, Firefox and Safari 27; an older Safari may not open them. | Opens .ogg and .opus |
| WebM.webm | WebM files open in Chrome, Edge, Firefox and Safari. | Opens it |
| MOV.mov | MOV files open in Chrome, Edge, Firefox and Safari 27; Safari 26 and earlier cannot read their sound. | Opens it |
| AIFF.aif, .aiff, .aifc | AIFF files open only in Safari. | Does not open it |
| CAF.caf | CAF files open only in Safari. | Does not open it |
| 3GP.3gp, .3gpp, .3g2 | A 3GP file with AMR sound does not open in Chrome, Edge or Firefox; one with AAC sound opens in Chrome and Edge. | Opens .3gp |
| AMR.amr | AMR, the format many Android phones save voicemails in, does not open in Chrome, Edge or Firefox. | Opens it |
| WMA.wma | WMA files do not open in any browser. | Opens it |
When this browser cannot open your file, its row is marked.
How it works
Your browser decodes the file and saves an MP3 or a WAV.
The file is opened and saved on this device, so which formats open depends on your browser.
It is compressed as MP3.
The MP3 has a constant bitrate: 192 kbps unless you choose 128, 256 or 320. A higher bitrate keeps more of the sound in a larger file. MP3 files are made with lamejs, a JavaScript port of LAME, under the GNU LGPL.
Or keep a WAV.
A WAV keeps the decoded sound as 16-bit samples, in a much larger file than the MP3. Choose it if you will edit the recording.
Questions
Before you convert.
Which formats open in Chrome?
WAV, MP3, FLAC, Ogg, Opus, WebM and MOV, and M4A or MP4 with AAC sound. A 3GP opens only when its sound is AAC. AIFF, CAF, AMR and WMA do not open in Chrome. The table above has a row for each.
An AIFF or CAF file?
Both open only in Safari. Open this page in Safari on a Mac or an iPhone and convert the file there. Solipsium's server does not open AIFF or CAF, so the try takes one only in Safari.
An AMR voicemail?
AMR does not open in Chrome, Edge or Firefox, so this page cannot convert it there. Solipsium's server opens it. The try sends the file whole, up to 25 MB, and repairs its first 20 seconds; a free account's editor opens the whole recording and exports a WAV. Save a voicemail shows how to get one off a phone.
A WMA file?
No browser opens WMA. Solipsium's server does, so the try and a free account's editor take it the same way they take AMR.
Does converting lose quality?
An MP3 leaves some sound out to save space, so converting a FLAC or a WAV loses a little; 192 kbps or more keeps the loss small. An Ogg or an M4A is already compressed, and the MP3 compresses it again in its own way, so a little more is lost. A WAV is not compressed again.
Is my file uploaded?
Not to convert it. Your browser opens and converts the file on this device, and Solipsium's check of the recording runs in your browser too. Audio is sent only if you press Repair the first 20 seconds. For a mono or stereo recording of up to five minutes, only its first 20 seconds leave this browser; Solipsium repairs them on its server and deletes them within an hour. A longer file, or one this browser cannot open, has to go whole, so the try is offered for it only up to 25 MB, and Solipsium keeps just its first 20 seconds.
Hard to hear the voice?
Drop the recording on the home page. The check runs in your browser, and you can hear its first 20 seconds repaired with no account.
Check a recording
The check and the 20-second try need no account.