Is CrateTag only for MP3 files?
No. The MP3 route focuses on MP3 tag cleanup because many people start there, and CrateTag also supports mixed-format cleanup for FLAC, WAV, and AIFF files.
Local-first music metadata cleanup for messy MP3 folders and mixed-format libraries
Clean up MP3 tags without fixing every track by hand.
CrateTag Studio helps clean MP3 titles, artists, albums, artwork, labels, BPM, keys, ISRCs, release dates, filenames, and folder structure — so your tracks are easier to search, sort, and trust. Start with MP3, and keep the same cleanup workflow when your folder also includes FLAC, AIFF, WAV, and MP3 files.
MP3 might be where the cleanup starts, but real music folders are rarely that tidy. CrateTag also supports FLAC, WAV, and AIFF, so you can use one workflow across mixed music libraries instead of splitting the job by format.
What this page covers
Start with MP3, and keep the same cleanup workflow when your folder also includes FLAC, WAV, or AIFF files.
- Source audio stays on your device.
- Metadata is read locally in the browser.
- Matching support uses metadata-only requests.
What CrateTag cleans
Clean the MP3 details that matter after import.
CrateTag focuses on the metadata that changes how your library feels day to day: the fields you search, sort, scan, and trust when you are building crates or maintaining an archive.
- Clean track identity, artwork, release context, BPM, key, and filename details.
- Keep the output reviewable instead of pretending every file resolves perfectly.
- Use one cleanup workflow when MP3 folders also include FLAC, WAV, or AIFF files.
Mixed-format support
Start with MP3. Keep going when the folder is mixed.
MP3 might be where the cleanup starts, but real music folders are rarely that tidy. CrateTag also supports FLAC, WAV, and AIFF, so you can use one workflow across mixed music libraries instead of splitting the job by format.
- Support MP3, FLAC, WAV / WAVE, and AIFF / AIFC in one route.
- Respect format-specific tagging behavior instead of treating every file like the same generic upload.
- The MP3 route connects to broader mixed-format library cleanup work.
Matching honesty
Protect your library from bad writes.
CrateTag is designed to be helpful without being reckless. When a match is not clear, the workflow surfaces that ambiguity instead of pretending every file was perfectly resolved.
- Ambiguous files are easy to review.
- Skipped files explain what happened.
- Strict matching protects the library instead of punishing the user.
Browser-side cleanup, not blind remote processing.
In the main cleanup flow, your source audio stays on your device. CrateTag reads file metadata locally, uses metadata-only requests for matching support, then writes the tags and builds the final ZIP locally.
- Audio stays on this device during cleanup.
- Server requests are limited to metadata and artwork support.
- Finished ZIPs stay local so you control the final files.
Common questions
Does my source audio upload to the server?
In the main browser cleanup flow, source audio stays on your device. CrateTag reads metadata locally, uses metadata-only requests for matching support, then writes tags, artwork, and the final ZIP locally.
What MP3 tags can CrateTag help clean?
CrateTag can help clean titles, artists, albums, album artists, artwork, genre, label, BPM, key, year, release date, ISRC, filenames, and folder structure.
Is this useful for DJs?
Yes. CrateTag is built for music-library cleanup work like crate prep, promo-folder cleanup, and preparing files before importing them into rekordbox, Traktor, Serato, Engine DJ, or another music library.
Will every file be matched perfectly?
No. A careful tool does not promise that. CrateTag is designed to be strict and reviewable, so unclear matches can be surfaced instead of silently writing bad metadata into your files.
What do I get at the end?
You get a cleaner, reviewable ZIP package with updated metadata, artwork, filenames, and organization ready to bring back into your library.
Related cleanup routes
- Metadata editor — Step into the broader mixed-format metadata story.
- Music organizer — Move from MP3 tags into library organization.
- Add album art to MP3 — Read the artwork-specific page when cover art is the main job.
Start with the MP3 folder you keep avoiding.
Clean the tags, review the results, and download a ZIP that is easier to bring back into your music library.
Start cleaning MP3 tags or sign in to keep your next cleanup pass moving.
Trust and support
Source audio stays on this device during the browser-side cleanup workflow.
Questions? Email admin@cratetagstudio.cc.