Compress MP3 to 8 MB
Hit the Discord free-tier upload cap. Drop the file, click compress.
Drop files or a folder here
or click to browse · paste from clipboard
Accepts .MP3, .WAV, .M4A, .AAC, .FLAC, .OGG, .OPUS · Up to 1,000 files
How it works
Drop your files
Drag and drop, click to browse, or paste from clipboard. Up to 1,000 files at once.
Choose settings
Adjust quality, format, and other options to match your needs.
Click Convert
Everything runs in your browser via WebAssembly. MP3 Compressor happens locally — no server involved.
Download
Download files individually or grab all at once as a ZIP.
Discord's free tier caps file uploads at 8 MB. Nitro Basic raises it to 50 MB and Nitro to 500 MB, but everyone else needs to stay under 8 MB or the upload gets rejected. Compressing to just under 8 MB keeps the file playable in the Discord audio player, avoids the third-party hosting hop, and doesn't force teammates to click through to Google Drive.
When you need 8 MB
- Discord free-tier audio uploads (8 MB hard cap)
Discord rejects audio files above 8 MB on free accounts. Uploading a pre-compressed MP3 keeps it playable inline in the channel.
- Music demos in DAW-community channels
Rough mixes, beat sketches, and stems for feedback — 8 MB fits a 3-minute track at ~350 kbps or a 5-minute song at 192 kbps, plenty for critical listening on headphones.
- Podcast preview clips
Send collaborators a 10-minute rough cut in Voice mode without hitting the cap. Under 8 MB at 64 kbps mono.
Frequently asked questions
A 3-minute track fits at ~350 kbps (near-transparent). A 5-minute song fits at 192 kbps (good quality). A 10-minute song needs to drop to 96 kbps or use Voice / Podcast mode if it's spoken word.
Discord uses the binary megabyte definition (8 × 1024 × 1024 bytes = 8,388,608). Setting a target of exactly 8 MB in the tool matches Discord's calculation, so a file that says 7.9 MB will always be accepted.
No. Unlike video, Discord serves audio files as-is — the MP3 you upload is the MP3 your channel members download. Pre-compressing to a smaller size keeps quality control in your hands and doesn't stack additional lossy re-encoding on top.
Yes. Drop WAV, M4A, AAC, FLAC, OGG, or Opus files and they'll be re-encoded to compressed MP3. No need to convert to MP3 first with a separate tool.
No. Compression runs entirely in your browser using ffmpeg.wasm. Your audio files never leave your device. Only the tool's code and the encoder library are downloaded from ConvertYard's servers.