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Why this runs on your computer

There is no upload: The work happens in this tab. Your file never travels, so there is no copy of it anywhere but your own disk.
Nothing to delete later: Sites that upload promise to delete your file afterwards. That promise only matters because the file was theirs to hold.
It works with the Wi-Fi off: The honest test. Turn off your connection and the tools keep working, because everything they need is already here.

Drop your file hereto convert it

Nothing is uploaded - the tools run right here

Applies to every loaded image

Look Strength 100% Brightness Contrast Saturation Vibrance Vignette

Max width

Format Shape

Colours 6 Detail 1 Smooth curves

Shape Size Across Down Border

Text Where

100%

Convert MP3 files online, without uploading them

Turn an MP3 file into WAV, FLAC, M4A, OGG and more - here in this tab, with nothing uploaded.

How to convert MP3 files

Drop your MP3 file in.
Pick the format you need and press Convert.
Save the converted file.

Why this one stays private

Audio files are voice memos, interviews, recordings of people. Converting one elsewhere means uploading all of that.

Questions

What can I convert MP3 to?

WAV, FLAC, M4A, OGG and more. MP3 is the format that plays on absolutely everything, so the usual reason to convert is to get a file that opens where this one does not.

Which format should I pick?

MP3 to be sure it plays. FLAC or WAV when nothing may be lost. M4A for Apple devices.

Can I convert several at once?

Yes - drop them all in, and save them one by one or together as a zip.

How to convert MP3 files

Why this one stays private

Questions

The same tool, other formats