Open .flac files online
To open a .flac file in your browser, press Open editor on the audio editor, then choose File > Import > Audio and pick your file. The FLAC is decoded and added as a new track with its waveform, and you can edit it there. On 2026-10-22 we imported a 24-bit, 48 kHz mono FLAC from Wikimedia Commons (CC0, 3.6 seconds) and a 16-bit, 44.1 kHz stereo FLAC of our own. Both showed up as clips with the right channel count. We lowered the Commons clip by 12 dB with the AudioSuite menu and saved it with File > Bounce Mix as FLAC, 24-bit. The file was a valid 24-bit, 48 kHz FLAC with exactly the same 175,104 samples as the original. Compared sample by sample it was 15.0 dB lower: 12 dB from our edit and 3 dB because a mono clip is placed in the middle of a stereo mix. The leftover difference was about -102 dB. Things to know: the exported file is stereo at the session rate of 48 kHz, tags such as the title were not kept, and a bounce mixes every unmuted track, so we soloed the one we wanted. We did not listen to playback. Nothing is uploaded and there is no sign-up.
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Can I open it?
| Check | Result | Notes |
|---|---|---|
| Listed by the engine | Listed in docs | FLAC is listed for both import and export, together with WAV, BWF, RF64 and AIFF/AIFC. Bounce is to WAV, AIFF or FLAC. |
| Opened a .flac file | Works | A 24-bit, 48 kHz mono FLAC of 3.648 seconds from Wikimedia Commons (CC0) was added with File > Import > Audio. The status bar said Imported commons-zotero-pronunciation.flac and a new track appeared with a clip marked 1 channel and a visible waveform. The system file chooser worked, so no drag and drop was needed. |
| Opened a 16-bit stereo .flac | Works | A 5-second, 44.1 kHz, 16-bit stereo FLAC made with ffmpeg imported the same way as a 2-channel clip. We did not edit or export it. |
| Edited it | Works | We selected the Commons clip and used AudioSuite > Other > Gain with -12 dB, then Render. The clip was replaced by a rendered one named commons-zotero-pronunciation-gain, with a visibly smaller waveform. |
| Exported as .flac | Works | We soloed the track and used File > Bounce Mix with the format set to FLAC and a bit depth of 24-bit (16-bit, 24-bit and 32-bit float are offered). The browser downloaded Midnight Groove Bounce.flac, 476,458 bytes. The status bar reported a peak of -19.8 dBFS. |
| Checked the exported .flac | Works | macOS file reads it as FLAC audio, 24 bit, stereo, 48 kHz, 175104 samples. ffprobe reads 3.648 seconds, the same length as the source. After decoding, both channels lined up with the source with no offset and matched it at -15.000 dB with a leftover of about -102 dB. We imported the exported file into the editor again and it showed as a 2-channel clip. |
| What the export contains | Partial | The mono clip came out as stereo, with each channel 3 dB lower (centre position in the mix). The sample rate is the session rate of 48 kHz, not the rate of the source file. The title tag and other tags of the Commons file were not in the exported FLAC. A bounce mixes every unmuted track in the session, so we soloed the one we wanted. |
| Other FLAC kinds, and playback | Not tested yet | Not tested yet: 8-bit or 32-bit FLAC, more than two channels, very long files, embedded cover art, FLAC inside an Ogg container, and exporting a 44.1 kHz file. We did not play the tracks, so we cannot say how they sound. |
| Phone screen (390 px wide) | Not tested yet | Not tested for this format. |
Our test file open in the audio editor on anyedit.app, 2026-10-22