Online MP4 Tagger

Edit tags on MP3, MP4 and M4A files, right from your browser!

Pick Files


{{noads ? "Hey " + noads + "! " : ""}} works offline and from your browser. This means that you don't need to upload your files, so it's super fast and easy.

Tags are saved in a format that is readable by both iOS and Android devices, as well as iTunes and other media managers.

This site is made possible through my WorkerB, MP4.js and MP3.js libraries (which are very poorly maintained and documented, sorry). Also uses JSZip and jDataView. Any comments or questions can be sent to

Edit Tags

Treat as one album

All files will be saved with the same Album Title, Artist and Genre. They will also be given a 'Track' tag, to specify the order to be played in.

{{$index+1}} {{}}
Cover Title Artist Album Genre
Loading Tags...
File is corrupted!

Downloading File{{files.length>1?'s':''}}

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Hey {{noads}}! Here's where I'd normally put Amazon Affiliate Links to related music to help pay for this site - but I didn't want to look like I'm spamming for ad views so I hid them.(Show 'Em)