Kid3
Kid3 3.10.1 is a cross-platform audio tag editor for batch changes to ID3, Vorbis, FLAC, MP4 and Matroska metadata, with conversions between tags, filenames, folders, playlists and album data.
What Kid3 is for
Kid3 organizes music, podcasts and audiobooks by editing titles, artists, albums, track numbers, artwork, chapters and custom fields. It can generate filenames from tags, import album data, export records and create playlists, while also offering a command-line workflow for automation.
Version and format support
Kid3 3.10.1 is the current stable fix release. The 3.10 series adds Matroska, WebM, QuickTime and Nero chapter, STEM, WAV iXML and BEXT support, while 3.10.1 fixes MP4 atom additions, Matroska frame deletion and timestamps beyond 24 hours. Choose a desktop or Android build that matches the device architecture.
Metadata and file safety
Ordinary tag editing does not re-encode the audio stream, but it can rewrite file structures. Libraries, players and custom fields may disagree about compatibility, and online matching can select the wrong album. Use original backups, small previews, duplicate checks and playback verification before a batch save.
Maintenance note
Review date: 2026-08-06. The page was checked against Kid3 3.10.1 release changes, platform packages, format support, batch workflows and the GPL-2.0-or-later license.
Save to your cloud drive
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Kid3 3.10.1 tag backup, batch cleanup and rename guide
Copy a small sample of audio into a reversible workspace, normalize only confirmed fields and filenames, then expand to the full library after player and media-library checks pass.
Before you start
- Prepare test copies containing representative MP3, FLAC, M4A or Matroska files rather than editing unique originals.
- Record the existing folder structure, naming rules, encoding, artwork and custom fields, and pause other media-library scanners.
- Choose a package for the device architecture; Android builds distinguish ARMv7 and ARM64 while desktop packages follow the operating system.
Installation steps
- 01
Choose a desktop or mobile build
Use the Windows x64 installer or ZIP, the matching macOS Intel or Apple silicon build, a Linux package and an Android APK for the target architecture.
- 02
Create a test workspace
Copy a small mixed-format sample into a separate directory, keep the originals read-only or backed up, and confirm that the application reports version 3.10.1.
- 03
Configure tag and filename rules
Decide on tag version, encoding, track padding, artist separators and filename template; preview conversions before enabling automatic saves.
Quick start
- 01
Compare existing tags
Inspect one album's title, album artist, year, track and disc numbers, genre and artwork, distinguishing empty fields from deliberate custom values.
- 02
Normalize only confirmed fields
Apply batch values only where the mapping is certain, check track titles individually and verify edition, region and medium when importing online data.
- 03
Preview and sample-check renames
Preview illegal characters, duplicates and long paths before generating folders and filenames, then check sorting, artwork, chapters and playback in several players.
Usage tips
- Filename templates and automation can change hundreds of files, so run them in a copy and keep an export or operation log.
- Online databases may differ in edition, capitalization and genre; treat imported values as candidates rather than immutable truth.
- Embedded high-resolution artwork increases file size, and external versus embedded artwork support depends on the player.
Troubleshooting and uninstall
Why are non-Latin tags garbled after saving?
Check the source tag version, text encoding and player support with a backup copy, then compare ID3v2.3, ID3v2.4 or Unicode settings without repeatedly overwriting the only file.
How do I avoid duplicate filenames during a batch rename?
Add disc number, track number or another unique field to the template, preview the result and write to a new directory before replacing the old structure.
- Export rules and stop writesSave reusable format rules, scripts and export templates, confirm that no batch job or unsaved edit remains, and quit the application.
- Remove the app and preserve audio backupsUninstall or delete the program and selected configuration, but keep original audio and verified backups until the whole library has been checked.
Frequently asked questions
Does Kid3 re-encode audio and reduce quality?
Normal tag editing changes metadata rather than encoding the audio stream, but it still rewrites file structures. Back up first and check player compatibility and hashes on a small sample.
What is the difference between Kid3 and Kid3-Qt?
They offer similar tagging workflows, while the Qt variant avoids a dependency on KDE desktop libraries and may integrate better with other desktop environments. Choose one dependency model instead of mixing configurations.
Does Kid3 support Matroska and WebM tags?
Yes. The 3.10 series added those formats and 3.10.1 fixed several Matroska issues, but chapters, artwork, subtitles and player compatibility should still be tested on copies.