Compress FLAC files

Upload a FLAC file and shrink its size. FLAC audio is lossless, so it shrinks by lowering the sample rate and bit depth.

Quality

What compressing a FLAC means

FLAC is already losslessly compressed, so the tool shrinks it by reducing the audio resolution: sample rate, bit depth, or both. The output is still FLAC, lossless at its new, lower resolution.

A 24-bit 96 kHz studio master downsized to 16-bit 44.1 kHz keeps CD quality at a fraction of the size, which is plenty for everyday listening.

When this beats converting to lossy

Hi-res purchases and Bandcamp downloads often carry resolution far beyond what playback gear reproduces. Downsampling keeps you in the lossless world while reclaiming real space. When maximum shrinkage matters more than losslessness, FLAC to M4A or MP3 goes much further.

Frequently asked questions

Is the downsized FLAC still lossless?

Yes, at its new resolution. The reduction from, say, 96 kHz to 44.1 kHz discards ultrasonic content, and everything within the new resolution is stored losslessly.

Will I hear the difference from a hi-res original?

In blind tests, almost nobody distinguishes 16/44.1 from hi-res on normal equipment. Archive the original if you want certainty either way.

Are files uploaded for processing?

No. Even large hi-res files compress locally in your browser.