Why this tool is useful
Correct portable music-library labels before archiving or syncing a legitimately owned MP3 while keeping the audio on the current device.
Local File Tools · runs locally
Private MP3 Tag Editor
Edit title, artist, album, year, track, genre and comment fields in an MP3 without uploading the audio or contacting a metadata service.
Ready. Your working data stays in this browser.
Files and capture streams stay on this device. Processing uses browser APIs only; nothing is uploaded to YTSave, the media API or a proxy.
How it works
The browser verifies an MPEG audio frame, reads existing ID3v1/ID3v2 data with pinned MP3Tag, updates exactly seven bounded fields and saves a new MP3 locally.
Practical example
Select an MP3, enter its title and artist, leave a field empty to clear it, then download the tagged copy and keep the source unchanged.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.