Mp3tag is a tag editor for audio files, letting you view and rewrite metadata such as artist, album, title, and cover art. It handles entire albums at once, pulls data from online music databases, and renames files from tag values.
Mp3tag is a metadata editor that reads and writes the tags inside audio files, covering the fields that music players, car stereos, and DJ software use to sort a collection. A typical session starts by loading a folder or an entire library into the file list, selecting the items you want to standardise, and then filling in artist, album, year, genre, and artwork either by hand or in bulk. Because every edit applies to the whole selection, correcting a hundred files takes roughly the same effort as correcting one. Renaming, numbering, and playlist generation can be driven by the same tag values, so file names and embedded data stop disagreeing.
Format coverage is wider than the name suggests: Mp3tag writes ID3v1.1, ID3v2.3, ID3v2.4, APEv2, Vorbis Comments, MP4, and WMA tag types, which means lossless collections and video containers are handled alongside ordinary MP3s. Tag sources connect to Discogs, MusicBrainz, and other databases, and the community-maintained web source scripts can be edited if a service changes its layout. Cover art can be downloaded, resized, cropped square, or exported in bulk. Actions and action groups automate repetitive transformations such as case fixes and field swaps. If the stumbling block is playback rather than metadata, LAV Filters solves the decoding side of the problem instead.
The value of Mp3tag shows up the moment a library gets messy. Albums ripped at different times carry inconsistent artist spellings, missing track numbers, and artwork stored outside the files, and fixing that by hand through a player's edit dialog is slow and error-prone. Mp3tag collapses the job into a selection and a few rules: strip the leading track number from titles, convert the case of artist names, copy the album field across a folder, or renumber an album in one pass. Online lookups fill in the details you cannot remember, and the results can be written to the files or discarded before anything is saved. Because the same data drives renaming, exported catalogue lists, and playlists, the audio files, folder structure, and documentation stay aligned. It is equally useful for podcasts, audiobooks, and field recordings, where custom fields and per-file sorting keep large archives searchable.
Key capabilities and highlights.
Load a folder, select every track, and change artist, album, year, genre, or any other field once for the entire set. Mp3tag writes the new values to all selected files in a single operation, which is far quicker than correcting tags track by track in a player.
The editor handles ID3v1.1, ID3v2.3, ID3v2.4, APEv2, Vorbis Comments, MP4, and WMA tag formats across lossless and lossy audio. That breadth matters when a collection mixes rips from different eras, since every file type can be normalised from one window instead of several tools.
Mp3tag can search Discogs, MusicBrainz, and other databases from inside the app, with the results previewed before they are written across the selected tracks. Album-level data arrives together, so artist, title, year, and track numbering stay internally consistent rather than being filled in piecemeal by hand.
Album covers can be downloaded from the connected databases, embedded into files, resized, cropped to a square, or stripped out again. Batch export pulls embedded artwork back out into image files, which is handy when rebuilding a library or supplying artwork to another application.
Pattern-based converters rename files from tag values or import tag values back from existing file names, so a folder like artist-album-track can be reorganised into a clean structure and then kept in sync. Regular expressions handle awkward naming conventions that a simple pattern would miss.
A library of actions covers case conversion, character replacement, field swapping, trimming, and imports from text files. Several actions can be saved as a named group and applied with one click, which turns a tedious cleanup routine into a repeatable procedure for the next batch of files.
User-defined templates export the collection to HTML, RTF, or CSV for catalogues, backups, and print-ready lists, and multiple output files can be generated from one run. Playlists can be created automatically from the tracks you are editing, keeping playback order tied to the metadata.
Beyond the standard fields, arbitrary custom tags can be added, displayed as their own columns, and edited like any built-in value. Sorting, filtering, and column layouts can be shaped around a specific collection, so audiobooks, DJ sets, and classical recordings each get a view that reflects how they are actually organised.
Browse historical releases and previous builds.
No old versions have been added yet.
Common questions about Mp3tag.
It edits the metadata stored inside audio files, the artist, album, title, track, year, genre, comment, and artwork fields that players read. It does not re-encode or alter the audio itself, so tag changes are quick and do not reduce sound quality.
Yes. Selecting many files and editing a field applies the change to the entire selection, and actions or action groups stack several transformations into one click. That is how people standardise capitalisation, strip stray text, or renumber albums across hundreds of tracks in minutes.
Two places. You can type values yourself or import them from a text file, and you can also query online databases such as Discogs and MusicBrainz through the tag sources. Results appear in a preview list, so nothing is written to your files until you confirm the entries you want.
Yes. Mp3tag converters build file names from tag values using a pattern, and they can also read existing file names back into tags. That means a disorderly folder can be reorganised into a consistent scheme, and the metadata and file names stay in agreement afterwards.
Yes. Artwork can be downloaded from the online sources, added to files, removed, resized, or cropped to a square, and embedded images can be exported back out in bulk. That covers the usual problem of albums carrying screenshots, thumbnails, or missing covers.
No. Despite the name, Mp3tag handles lossless formats, MP4 audio, Ogg and Opus files, WavPack, Musepack, and Matroska containers as well. Podcasters, audiobook collectors, and archivists use it for formats that never appear in a music store.
Mp3tag is a tag editor for audio files, letting you view and rewrite metadata such as artist, album, title, and cover art. It handles entire albums at once, pulls data from online music databases, and renames files from tag values.
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