Mp3tag is an audio tag editor that reads and writes metadata across MP3, FLAC, MP4, OGG, WMA and other music files. It lets you fix, complete and standardize tags in bulk instead of editing one track at a time.
Mp3tag is a metadata editor for audio files that opens a folder or a selected batch of tracks, displays their tags in a sortable table, and lets you change those fields directly. The workflow is simple: load files, filter or sort the list, edit a field or apply an action group, then save the changes to disk. Common tasks include correcting artist and album names, filling in missing track numbers and years, embedding cover art, and renaming files from their tags. Because edits apply to the whole selection at once, a library of thousands of files can be cleaned up in minutes rather than track by track, which is the main reason people keep Mp3tag in their toolkit.
Metadata work rarely happens on its own. Libraries grow from ripped CDs, downloads, and old backups, and each source brings its own habits: inconsistent capitalization, missing album artist fields, or several tag standards written into the same file. Mp3tag deals with that by filtering the list down to the problem files, pulling release details and artwork from online databases, and applying saved rules to everything selected. Reviewing results is part of the loop, so columns can be rearranged and edited in place before anything is written to disk. Users who also tune playback filters, such as LAV Filters, often keep both tools in the same media setup.
The main benefit of Mp3tag is time: what takes an evening of manual editing in a player's tag dialog becomes a single pass over a selection. Because every field, action and template can be reused, a consistent tagging scheme becomes repeatable rather than a one-off cleanup — the same action group that fixes capitalization today fixes the next batch of imports too. Control over artwork matters as much as text: covers can be added, resized or exported in bulk, which keeps album art uniform across a collection instead of a mix of sizes and placeholders. Templates in Mp3tag for reports and lists turn tags into something you can review, audit, or share, while automatic playlist creation keeps playlists in step as folders change. Tag lookups cut typing on large acquisitions. The result is a library that is easier to search, sort, and play correctly, and a workflow that scales as the collection grows.
Select any number of files in the file list, change one or more fields in the Tag Panel, and save every edit at once. This removes the repetitive work of opening each track individually and makes it practical to standardize an entire album, folder, or drive in a single session.
An action group bundles several operations — case conversion, text replacement, field mapping, cover handling — into one named preset applied with a single command. Build the preset once in Mp3tag, reuse it on future imports, and keep tagging rules consistent across different sources and formats.
Query online databases such as MusicBrainz, Discogs and freedb from inside Mp3tag to retrieve release data and artwork for a selection. This shortens manual entry for new albums, reduces spelling mistakes, and can fill artist, album, year, track and genre fields in one step.
Convert tag fields into filename patterns, or parse existing filenames back into tags, using the same template syntax. This keeps folder structures readable and predictable, and it recovers usable metadata from badly named files without retyping each entry by hand.
Add, extract, resize, crop and export embedded artwork in bulk. Album art stays consistent across a collection instead of a mixture of oversized scans and missing placeholders, and covers can be saved to disk for use elsewhere or removed when they are not wanted.
Filter the file list by any tag field to isolate duplicates, empty values, or inconsistent spellings before changing anything. Combined with sorting and column customization, this turns a large library into a reviewable list and lets you verify a fix rather than assume it landed everywhere.
Define export templates to turn tag data into HTML, CSV, RTF or plain-text listings using the built-in scripting functions. Collectors use this to document a collection, spot missing fields, and share readable inventories with others.
Built-in scripting functions and regular-expression support handle the awkward cases: splitting combined fields, padding track numbers, extracting values from text, and applying conditional replacements. They can be combined inside actions and templates, giving advanced users precise control over how metadata is cleaned and reshaped.
It reads and writes metadata for MP3, MP4 and M4A, FLAC, OGG Vorbis, Opus, WMA, APE, WavPack, WAV, AIFF, Musepack and Speex, among others, covering ID3v1, ID3v2.3, ID3v2.4, Vorbis comments, APE and iTunes-style MP4 tags. Because one editor handles all of them, mixed-format libraries can be tagged consistently in a single pass.
Yes. Add a folder to the file list, select the files you want, and edit fields in the Tag Panel or apply an action group; the change is written to every selected file when you save. Filters and sorting help narrow a large collection down to the files that actually need work before you commit an edit.
It does, and it also works in the opposite direction. A converter can build filenames from tag fields using a pattern based on artist, album and track number, while the reverse converter parses existing filenames back into tags. Both use the same template syntax, so naming rules stay consistent across a library.
Use the tag sources menu to query an online database for the release you are tagging, review the matches it returns, and apply the result to your selection. Artwork comes along with the release data where it is available. Results are only as accurate as the database entry, so checking the match before saving is worthwhile.
Yes. Mp3tag keeps an undo history for tag changes made during the current session, so an action applied by mistake can be reverted from the Edit menu. That is one reason to review a selection carefully before applying a broad action group, and to save only once the result looks right.
Yes. The default layout exposes common fields in a Tag Panel, so straightforward edits such as correcting an artist name need no scripting or templates. Action groups, filters, scripting functions and export templates are available when you need them, which means the same tool covers quick corrections and large, rule-based cleanups.
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