AAC to FLAC Converter - free, no upload, in your browser

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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%

Questions

Why convert AAC to FLAC?

AAC is the modern lossy format, better than MP3 at the same size. FLAC is lossless but compressed, so it keeps the quality without the bulk. Converting is how you move a file from the first situation to the second.

What will the FLAC file be?

FLAC, which decodes to exactly the same samples as the source at roughly half the size of WAV.

Does converting AAC to FLAC lose quality?

No. FLAC is lossless, so this step loses nothing - though it cannot bring back what the AAC file already discarded.

Does converting lose quality?

Going to a lossless format never does. Going to a lossy one always does, though usually not audibly at the settings used here.

Convert AAC to FLAC without uploading it

How to convert AAC to FLAC

Why this one stays private

Questions

The same tool, other formats