What is a .WMA file?
WMA is Microsoft’s Windows Media Audio format.
- Did you know
- Microsoft launched WMA in 1999 to compete with MP3.
- A WMA file is really an Advanced Systems Format (ASF) container, the same wrapper Microsoft used for Windows Media Video.
- The codec was numbered to match Windows Media Player, so the first widely shipped version was “Windows Media Audio 7”.
- Microsoft later added a WMA Lossless variant that rebuilds the original audio bit-for-bit, aimed at archiving master recordings.
- The WMA, WMA Pro, WMA Lossless and WMA Voice codecs share an extension but are technically distinct and mutually incompatible.
- What Analyser shows you
- Inspect the waveform, spectrogram, codec, bitrate, channels, and tags of MP3, WAV, FLAC, M4A, AAC, OGG, and Opus audio, and play Apple Core Audio (CAF) files such as iMessage voice messages, decoded on-device with FFmpeg where the browser cannot.
- Open a .WMA file
- Drag a .WMA file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.