Kid3

Kid3 is an audio tag editor for music collectors, podcast and audiobook maintainers, and anyone organizing local audio libraries. It edits metadata in multiple files at once and supports numerous formats, including MP3, FLAC, Ogg/Vorbis, Opus, MP4/AAC, WAV, AIFF and Matroska/WebM in the current series.

Metadata tools

• Edit and convert supported ID3v1, ID3v2.3 and ID3v2.4 tags.
• Batch-set album, artist, genre and other fields, with case conversion and replacements.
• Generate tags from filenames and filenames or directories from tags.
• Manage embedded pictures, chapters, synchronized lyrics and LRC imports or exports.
• Import album information from configured online sources, including MusicBrainz and Discogs.
• Export metadata and playlists or automate work with the CLI and QML/JavaScript.

Installing on macOS

Download the official DMG matching Apple Silicon or Intel and copy the app to Applications, or use brew install --cask kid3. The fresh catalog still contains 3.10.1, while the official project now advertises 3.10.2; this entry's download-size evidence matches the current package artifact; the release notes separately cover the latest history versions 3.10.2, 3.10.1 and 3.10.0. The exact 3.10.1 arm64 DMG is 32,617,885 bytes, confirmed by HEAD through the official SourceForge download redirect. Current cask requirements are macOS 13 or later. Separate older Qt 5 packages advertised by the developer have different compatibility and should not be confused with this arm64 package. The checked sources do not specify minimum RAM.

Kid3 uses Qt and media/tag libraries such as TagLib, FLAC and Chromaprint; the packaged application supplies its runtime components, while source builds require the appropriate development dependencies. The project also supports Linux, Windows and Android. The cask declares no named conflict. Allow enough disk space for media backups, downloads and artwork rather than equating installer size with library storage.

Accounts, license and network

Kid3 is free, open-source software under GPL-2.0-or-later, with optional donations. Local metadata editing does not require a Kid3 account or subscription. Online metadata and artwork imports need internet access and may require provider-specific authentication or terms, such as Discogs credentials. Data submitted to an import service is governed by that service's policy. Local files can be edited offline; online matching is optional.

File access and data safety

Give the app read/write access to the intended audio files and folders. Renaming files or directories and rewriting tags changes the actual library, so test batch operations on copies and back up valuable originals. Metadata formats do not share identical field semantics; converting tags can lose unsupported information, and a successful save is not proof that every player will interpret the same fields. Inspect imported matches, artwork rights and chapter/lyric timing before applying them in bulk. QML scripts and user actions can run automation, so review scripts before using them. The checked macOS documentation does not establish mandatory blanket Accessibility or Screen Recording access.

Sources: Official product and history, KDE application and detailed release notes, Official handbook, Source code.