# Differences on image file extension for cover art

**URL:** https://community.mp3tag.de/t/differences-on-image-file-extension-for-cover-art/64392
**Category:** General Discussion
**Created:** [April 13, 2024, 3:00pm UTC](https://community.mp3tag.de/t/differences-on-image-file-extension-for-cover-art/64392 "2024-04-13T15:00:10Z")
**Posts on this page:** 1
**Showing post:** 35

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### Author: ![rboss](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/r/5f9b8f/32.png) [@rboss](https://community.mp3tag.de/u/rboss)
#### Post date: [April 26, 2024, 4:51pm UTC](https://community.mp3tag.de/t/differences-on-image-file-extension-for-cover-art/64392/35 "2024-04-26T16:51:14Z")

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> [@rboss](#):
>
> When I get the time to properly compare and validate them, most formats will be cut from the final list.

Quick update:

Out of the 24 formats tested, I got the following results:

Formats that produced valid cover images in Apple Music\iTunes:  
.bmp, .cmyk, .cur, .dib, .dng, .emf, .eps, .gif, .heic, heif, .ico, .jpeg, .jpg, .png, .pdf, .psd, .rle, .svg, .tif, .tiff, .webp, .wmf, .xbm, .xcf.

- JPEG compression:  
.bmp, .cmyk, .cur, .dib, .dng, .emf, .eps, .gif, .ico, .jpeg, .jpg, .pdf, .psd, .rle, .svg, .tif, .tiff, .wmf, .xbm, .xcf

- non-JPEG compression:  
.png, .webp

- unsupported by Mp3Tag:  
.heic, .heif

Since there is nothing to gain by adding more than one format in JPEG compression, the next selection criteria was popularity/player compatibility; and .jpg came out on top.

So, the final list (that I'll be working with) has .jpg, .png, and .webp.  
And I think these formats will cover most of the intended use cases where cover art compression is needed.

I won't be marking any one reply as "the solution"; all posters contributed to get to this result directly and/or indirectly, and the "personal preference / specific requirement" aspect makes me realize that there is no one single answer to my original question.

Thank you all.

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