OneFreePlaceTool #287Local-first

MP3 to OGG

Convert MP3 to real OGG Vorbis locally with source-aware VBR quality, exact trim, loudness normalization, fades, channel/sample-rate control, metadata preservation, batch ZIP export and verified output.

Real VorbisOGG container + libvorbis audio, not a renamed WebM file.

Quality-aware VBRVorbis quality −1 to 10 with practical presets and source guidance.

Private workflowYour audio is processed inside this browser tab.

Add MP3 files

Conversion queue0 / 10

Vorbis quality

Sample rate

Channels

Loudness

Trim start (seconds)

End at (optional)

Fade in

Fade out

Preserve / edit title, artist and album

Add MP3 files to begin.

Uses pinned FFmpeg/WebAssembly with libvorbis. The engine code may load from jsDelivr or unpkg; your audio itself is not uploaded.

Guardrails: 10 files, 600 MB total, 60 minutes per file. OGG codec, duration, sample rate and metadata are verified before download.

Source waveformLocal decode

Title

Artist

Album

Quality advisorSelect a source to compare MP3 source bitrate with the chosen Vorbis quality.

No MP3 selected.

Original MP3

Converted OGG