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Repair a damaged audio file

Diagnose a broken recording or song, recover the playable audio and see how much of it survived.

Processed on our server. Your file is uploaded over an encrypted connection, processed in an isolated temporary folder, and deleted after download or automatically within about 15 minutes.

Best-effort repair for MP3, WAV, M4A, AAC, FLAC and OGG files that will not play, report a wrong length or contain damaged parts. Audio that is missing from the file cannot be brought back.

or drop it hereSupported formats: MP3, WAV, WAVE, M4A, AAC, FLAC, OGG, OGA, OPUS

This tool uploads your file to our server over HTTPS. It is processed in an isolated temporary folder and deleted after download or automatically within about 15 minutes.

How to use Repair Audio

  1. 1

    Upload the damaged file (MP3, WAV, M4A, AAC, FLAC or OGG).

  2. 2

    The server inspects the file and decodes it from start to end to find errors.

  3. 3

    Read the report and download the repaired audio, in the same format, when something was recovered.

About Repair Audio

Repair is best effort and runs on our server. WAV files from interrupted recordings often have wrong sizes in their header; we rewrite the header from the format description and the audio data actually present, without touching the samples. Other formats are first rewritten without re-encoding, which strips garbage and corrupt frames; if errors remain, everything that decodes is re-encoded in the same format. Every result is verified and classed as repaired, partly recovered or not repairable, with the recovered and expected durations. Audio that is missing or overwritten is never restored or invented. Files are deleted after download, or automatically within about 15 minutes.

Frequently asked questions

My recording stopped when the battery died. Can it be saved?

Often yes. WAV recordings usually keep their audio but have a wrong header, which we rebuild. M4A recordings without their index (moov atom) cannot be repaired here.

Will I get the missing part back?

No. Audio that is not in the file cannot be restored. The report shows how much was recovered compared with the expected length.

Is the output the same format?

Yes, wherever possible: WAV stays WAV, MP3 stays MP3 and so on. If damaged frames had to be skipped, the audio is re-encoded in the same format at good quality.