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Free · In-browser · No upload

MP3 Metadata & ID3 Tag Editor.

Edit one MP3 or batch-tag 2–100 files. Only checked batch fields change; untouched ID3 frames, cover art and MPEG audio bytes are preserved.

Before-and-after illustration of Metadata Editor: MP3 and tags becomes Retagged MP3 through Edit ID3 fields. — **Before → process → after**Inspect current tags and artwork, then verify the saved file.

FILE STRUCTURE MAP

Tag Field Inspector

Change the tag, not the encoded music. The current MP3 and accepted cover choice determine the saved file. ID3 fields change selectively; the MPEG payload is copied without audio decoding.

Open the full signal breakdownCurrent selection, preservation limits and delivery checks

MP3 and tags
Start with the right material
Correcting one MP3 in detail or applying selected artist, album, year, genre or comment fields across a controlled batch.
Edit ID3 fields
Understand the transformation
Single mode edits selected ID3v2.3/v2.4 fields and waits for the current source or validated JPEG/PNG; explicit front-cover removal retires older reads. Batch mode changes only checked fields, leaves APIC untouched and bundles files sequentially.
Retagged MP3
Verify the usable result
One tagged MP3 or one STORE-method ZIP containing every output plus a JSON manifest, with unchecked frames and MPEG audio bytes preserved.

Tag completeness

Where this workflow stops

Batch cover art is intentionally never changed. The editor is MP3/ID3v2.3/v2.4-focused, refuses unsafe malformed tags, and caps the combined batch at 160 MiB on desktop or 64 MiB on mobile.

THREE-PASS CHECK

Verify tags, artwork and playback

Wait for the current MP3 and cover to finish reading; Cancel or Retry resolves an unfinished choice.
Open the saved MP3 in your intended player and inspect title, front cover and retained back artwork.
Keep the original and verify playback separately; the page copies MPEG bytes rather than auditioning or decoding the track.

How to edit MP3 tags online, one file or in batch

Choose Edit one MP3 or Batch edit 2–100 MP3s. Select local MP3 files and wait for the current selection to load; Cancel read or Retry selected file resolves an unfinished single-file read.
In single mode, edit common fields and keep, replace, extract or explicitly remove the first APIC type-3 front cover. Replacement JPEG/PNG bytes must match their format and decode successfully before saving.
In batch mode, review accepted and rejected rows, remove rejected files, and check only the fields to apply. Unchecked fields and all embedded artwork remain unchanged per source.
Save the current tagged MP3 or the STORE ZIP containing every batch output and metadata-batch-manifest.json. Keep the original, unpack a batch and inspect tags, artwork and playback in the intended player.

This online MP3 tag editor parses ID3v2.3 and ID3v2.4 in your browser. Changed common fields are rewritten in each source tag version; untouched raw frames keep their bytes and order, and the MPEG audio payload is copied byte-for-byte without decoding, re-encoding or uploading the track.

The batch tag editor scans only tag bytes for its queue preview, then reads valid files sequentially during export. Input is capped at 160 MiB on desktop or 64 MiB on mobile. Before creating the ZIP, a second guard estimates peak working memory against a 512 MiB desktop or 256 MiB mobile limit: retained tag buffers + retained full source buffers backing output-audio views + rewritten tag buffers + ZIP staging headers/manifest + the final stored ZIP + one conservative download-Blob copy. ZIP entries use STORE (method 0). For artwork in FLAC files, use the companion FLAC Cover Art tool.

Worked example: correct an album without losing its artwork

For one track, change Album to your delivery name and choose a new PNG front cover. While the image reads, Save tagged MP3 is unavailable. When the current image is accepted, its filename and dimensions appear; save the new MP3. To remove the front cover instead, use Remove front cover: an older unfinished image read cannot restore it. The selected first type-3 APIC changes; other embedded pictures remain in source order.

For an album batch, check Album and enter the shared name. Leave Title, Artist and every other field unchecked unless you intend to overwrite them. Review each accepted file before exporting: unchecked fields, unknown frames and every cover stay individual. The ZIP has unique output names and a JSON receipt identifying the applied fields; it is not a promise that every player displays all ID3 frames.

If a file or cover is still reading

A new MP3 immediately retires the previous source and its exports, including while the file's memory check is pending. During a cover read, the last accepted cover remains visible as the previous choice, but Save and Extract wait. Cancel read or Escape explicitly keeps that previous accepted cover choice; a failed image leaves Save blocked until you Retry, choose another image, Cancel or Remove. Switching workflow or leaving the page retires unfinished work. Cancellation prevents late publication, not native disk I/O; a newer read may wait for the old physical read to settle. Cancelling a batch keeps its controls locked until the current file read settles. Wait for them to unlock before starting another export or switching to single mode; no partial ZIP is retained.

Check the delivered file, not only the form

Keep an untouched original. Reopen the downloaded MP3 in your actual player or delivery software and inspect its title, album, front cover and any back artwork you need. If artwork appears cached, reimport the downloaded file; do not assume a stale player thumbnail means the APIC bytes were not changed. Check playback separately: this editor copies MPEG bytes and does not perform a listening test. It is not a WAV/BWF, FLAC, ID3v2.2 or general audio-repair editor. Single MP3 input is capped at 256 MiB desktop or 128 MiB mobile; replacement artwork is capped at 20 MiB and must be a decodable JPEG or PNG.

Metadata Editor: quick answer and technical limits

Quick answer: An MP3 tag editor with a full single-file cover-art workflow and a separate 2-to-100-file batch workspace with explicit apply-mask controls.

Best for: Correcting one MP3 in detail or applying selected artist, album, year, genre or comment fields across a controlled batch.
How it works: Single mode edits selected ID3v2.3/v2.4 fields and waits for the current source or validated JPEG/PNG; explicit front-cover removal retires older reads. Batch mode changes only checked fields, leaves APIC untouched and bundles files sequentially.
What you get: One tagged MP3 or one STORE-method ZIP containing every output plus a JSON manifest, with unchecked frames and MPEG audio bytes preserved.

Know before you use it: Batch cover art is intentionally never changed. The editor is MP3/ID3v2.3/v2.4-focused, refuses unsafe malformed tags, and caps the combined batch at 160 MiB on desktop or 64 MiB on mobile.

Privacy: Selected audio is processed in this browser and is not uploaded to AudioWrench. Normal page assets can still be requested as described in the privacy notice. Privacy details →

FAQ

Does editing MP3 tags reduce the audio quality?

No. Only the metadata block at the front of the file is rewritten — the MP3 audio bytes are copied through completely untouched, with no decoding or re-encoding involved. The music in the saved file is bit-for-bit identical to the original.

Which tag fields and versions are supported?

The editor reads and writes ID3v2.3 and ID3v2.4 tags. You can edit title, artist, album, year, genre, track number, a comment and the front cover in single mode; frames you do not edit are carried into the saved MP3 unchanged.

Can I replace, remove or extract front cover art?

Yes. Single mode selects the first APIC picture type 3 as the front cover. Replace or remove affects only that frame; back covers and other embedded APIC artwork remain unchanged. You can also extract the selected JPEG or PNG front cover.

Is this MP3 tag editor free, and do my files stay on my device?

It is free with no account or watermark. MP3 tag parsing and writing happen in the browser, so the file is not uploaded. Untouched ID3v2.3 and ID3v2.4 frames and the original audio payload are carried through locally.

Can I batch edit MP3 tags online?

Yes. Batch mode accepts 2–100 MP3 files within the displayed input and peak-memory limits. You explicitly check each field to apply; unchecked fields, cover art, unknown frames and MPEG audio bytes remain unchanged per file. The result is one uncompressed ZIP containing uniquely named tagged MP3s and a JSON manifest.