Mp3tag is a metadata editor for music files that fixes artist, album, track and cover fields across many files at once. This guide explains what version 3.37 does, what it costs on Windows and Mac, and how to do its two main jobs.
This is an independent guide, not the developer's site. Download buttons lead to the official Mp3tag pages. Facts were read on mp3tag.de on 14 November 2026.
Mp3tag is a tag editor for audio files that writes ID3, MP4, WMA, APE and Vorbis tags to many files in one pass, renames files from their tags and pulls album data and covers from Discogs and MusicBrainz. The Windows version is offered with no price and a request for donations; the Mac edition is a separate paid app. Version 3.37 came out on 6 November 2026.
What Mp3tag does
Mp3tag is a tag editor: it changes the metadata stored inside audio files, the fields a player reads to show artist, album, title, track number, year, genre and cover art. It works on a selection of files at once, so a whole album or a whole library folder can be corrected in one step instead of file by file.
The program covers three jobs that most people arrive with. It edits tags in batches, it renames files and folders from those tags (or fills tags from badly named files), and it looks up album data and covers in online databases so you type less. Around those jobs sit smaller tools: search and replace with regular expressions, playlist creation, and reports of a collection exported to HTML, RTF or CSV from templates you define.
The full review weighs these features against the limits, and the question of cost gets its own page because the Windows and Mac editions are sold differently.
Main features at a glance
Batch tag editing Writes ID3v1.1, ID3v2.3, ID3v2.4, MP4, WMA, APEv2 tags and Vorbis Comments to many files at once.
Cover art Downloads album covers and embeds them; embedded covers can also be exported in a batch.
Online databases Imports tags from Discogs, MusicBrainz and freedb through the Tag Sources menu.
Rename and import Builds filenames and folders from tags, or reads tags out of existing filenames.
Replace Replaces characters or words in tags and filenames, with regular expression support.
Unicode The interface and the tags handle Unicode text, so non Latin scripts are stored correctly.
Guides on this site
Each page answers one question and ends in the same place, the official download. Read them in this order if you are new to the app.
Start with the system requirements and supported formats to confirm your Windows version and file types are covered. Then follow renaming files from tags, the job people most often install it for, and importing tags from Discogs and MusicBrainz, which saves most of the typing.
- Review: what works, what is missing, a score
- Is it free: Windows donation model and the paid Mac edition
- Rename files: Convert > Tag - Filename step by step
- Tag sources: Discogs, MusicBrainz and cover lookups
- Alternatives: other tag editors if this one does not fit
- Download: installer sizes, versions and install steps
Recent releases
The editor is updated often. Version 3.37 (6 November 2026) added headings, information fields and format string fields to the Tag Panel, direct text input with a live preview when converting text to tags, and further Tag Sources improvements. Version 3.36 (27 August 2026) brought custom field values that do not depend on Tag Panel fields and export to several output files at once; 3.36.1 followed two days later to fix a regression.
Earlier in 2026, version 3.35 added a Files options page, more toolbar customization, RF64 WAV support and better Discogs and MusicBrainz sources, and version 3.34 introduced new icons, interface scaling up to 200% and a customizable toolbar. The developer links release notes for each of these from the home page.
Who it suits
It suits anyone with a folder of music files that a player shows as unknown artist, track 01, or with mixed spelling across an album. It also suits collectors of lossless formats such as FLAC, ALAC, APE and WavPack, all of which are on the supported list, and people who keep audiobooks or videos in MP4 containers, since iTunes specific fields such as media type and TV show are supported.
It is less useful if you want music recognised by sound alone; its lookups search by album and release, not by an audio fingerprint. When you are ready, the download page lists both Windows installers and the route to the Mac edition.
Fix a whole album's tags in one pass. Rename the files from those tags in the next.
Get the official installer
Version 3.37 for Windows 11 to 7, 64 bit or 32 bit, from the developer's own site. No price is asked; donations are welcome.
Frequently asked questions
What is Mp3tag?
It is a tag editor for audio files. It writes metadata such as artist, album, title and cover art to many files at once, renames files from tags and imports album data from online databases.
Is Mp3tag free?
The Windows version is offered on the official download page with no price and a request for donations. The Mac edition is a separate app that you buy after a trial.
Which file types does it support?
The supported list covers 20 formats, including MP3, FLAC, MP4 and M4A, ALAC, AAC, Ogg Vorbis, Opus, WMA, WAV, AIFF, APE, WavPack, DSF and Matroska. Each is tagged in its native tag format.
Who makes the program?
It is developed by Florian Heidenreich in Dresden, Germany, and has been published since 1999. Support runs through online documentation, an FAQ and a community forum.
Does it work on a Mac?
Yes, through a separate Mac edition sold as a standalone app and on the Mac App Store. The Windows installers do not run on macOS.