Compress FLAC
Reduce FLAC file size by up to 80% with quality-controlled re-encoding.
or drop files here
Maximum file size: 200MB per file
About FLAC Compression
FLAC is a lossless codec, which means the file already stores audio in its most compact lossless form — re-wrapping it saves almost nothing. Meaningful size reduction comes from quality-controlled lossy re-encoding: this tool decodes your FLAC in the browser and re-encodes it as MP3, M4A or OGG at the bitrate you choose, typically cutting file size by 50–80% while sounding transparent at high settings. Your audio never leaves your device.For a bilingual document, check both English and French lettering in the downloaded preview. This PDF workflow rasterizes pages; it does not preserve searchable text or links. Keep the original when text extraction or accessibility matters.
When to Compress FLAC Files
Device Storage
Fit large lossless libraries onto phones and players
Sharing Limits
Send tracks within messaging and email size limits
Upload Limits
Meet demo and submission platform size caps
Mobile Data
Sync smaller files and save transfer volume
How to Compress a FLAC File Online
Upload your FLAC files
Choose one or more `.flac` audio files from your device.
Pick format and quality
Select MP3, M4A or OGG output and the bitrate that fits your quality needs.
Compress and download
Encoding runs locally in your browser; download the smaller audio files when done.
Frequently Asked Questions
Can you compress FLAC without losing quality?
Only marginally. FLAC is already losslessly compressed, so re-encoding it as FLAC again saves under 5%. Real size reduction requires lossy encoding — at 320 kbps most listeners cannot tell the difference from the original.
Which output format should I choose?
MP3 plays everywhere. M4A (AAC) sounds slightly better per megabyte on Apple devices. OGG (Opus) is the most efficient but a few older players lack support.
How much smaller will my FLAC files get?
A typical CD-quality FLAC (~900 kbps) shrinks to roughly 25% at 320 kbps, 20% at 192 kbps and 15% at 128 kbps.
Is this FLAC compressor free?
Yes, completely free with no limits. Processing happens in your browser, so your music is never uploaded anywhere.
Compress audio
Lower bitrate reduces size with a possible loss of detail. Re-encoding already compressed audio can also make it larger.
There is no guaranteed saving or exact target for every file. If the result is larger, some tools return the original; compare its format and size before sharing. For a bilingual document, check both English and French lettering in the downloaded preview. This PDF workflow rasterizes pages; it does not preserve searchable text or links. Keep the original when text extraction or accessibility matters.
References & Resources
Authoritative specifications and references for the file formats this tool works with.
Audio and video tools for compression, editing, extraction, and size reduction. Fast and secure.