# File size of jpg album art changes when embedding

**URL:** https://community.mp3tag.de/t/file-size-of-jpg-album-art-changes-when-embedding/18618
**Category:** Support
**Created:** [January 17, 2017, 11:39am UTC](https://community.mp3tag.de/t/file-size-of-jpg-album-art-changes-when-embedding/18618 "2017-01-17T11:39:58Z")
**Posts on this page:** 1
**Showing post:** 1

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### Author: ![Peter1](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/p/a587f6/32.png) [@Peter1](https://community.mp3tag.de/u/Peter1)
#### Post date: [January 17, 2017, 11:39am UTC](https://community.mp3tag.de/t/file-size-of-jpg-album-art-changes-when-embedding/18618/1 "2017-01-17T11:39:58Z")

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When I import a 600x600px jpg file of 90Kb into a m4a file (tag structure mp4), MP3Tag tells me that the size is 212KB (when I paste it in the cover art box), and 90KB when using "add cover..." method.

Of a different jpg (also 600x600px) of 110KB, MP3Tag tells me it is 76 KB (when using the copy/paste method), and 110KB when using "add cover..." method.

Is MP3Tag adding additional compression (or expansion !)?  
Or is the windows copy/paste command the cause?

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