The Core Difference: Lossless vs Lossy
WAV is an uncompressed, lossless format. Every audio sample is stored exactly as captured — no data is discarded. The result is perfect quality at the cost of large file sizes (typically 10x larger than an equivalent MP3).
MP3 uses psychoacoustic compression to discard audio frequencies that humans are less likely to notice. The result is much smaller files with slightly reduced quality — usually imperceptible at bitrates above 128 kbps.
When to Choose WAV
- You're delivering audio to a studio, broadcaster, or professional project.
- The file will be edited, mixed, or processed further.
- You want maximum quality and file size isn't a concern.
- You're archiving original recordings.
- The destination system requires lossless audio.
When to Choose MP3
- You're creating a ringtone or notification sound.
- The file will be used in a web player, podcast, or streaming platform.
- File size matters (mobile storage, email attachments, slow connections).
- The audio is voice/speech rather than music.
- You need broad compatibility with older devices and software.
What About OGG and WebM?
OGG (Vorbis codec) is an open-source compressed format that often outperforms MP3 at the same bitrate. It's ideal for web apps and games. WebM (Opus codec) is the most modern option — excellent compression, great quality, especially for voice. Both are supported by all major browsers but have less universal device compatibility than MP3.
TRIMR's Export Options
TRIMR lets you choose between WAV, MP3, OGG, and WebM at export time. There's no quality setting dial — WAV is always lossless, MP3 exports at 128 kbps, and OGG/WebM use browser-native encoding. Pick based on your destination, not just habit.