When this tool is useful
Opus is effective for speech, podcasts, and general audio when smaller files matter more than lossless preservation.
Audio compression
Create a smaller Opus audio file.
Choose a bitrate and create an Ogg Opus output using your browser's local audio encoder.
Live converter
Audio Compressor
Processed on-device. Your audio is not uploaded to ConvertZiva.
Drag & drop your file here, or choose a file. One supported audio file up to 20 MB and 5 minutes. Requires browser Opus encoding.
Format notes and limits
Output is Ogg with the Opus codec, not MP3. Opus is lossy, and browser encoding support is checked before conversion begins.
Related tools and guidance
FAQ
About this tool
Why does this output Opus instead of MP3?
Major browsers do not provide an MP3 encoder. Opus has broad browser encoding support and avoids pretending an unavailable codec exists.
What bitrate should I choose?
64 kbps suits speech, 96 kbps is balanced, and 128 kbps retains more music detail.