This guide will cover how and where to find high resolution album art for your media files using various different methods and sources. There is always Google image search but sometimes finding higher resolution images can prove difficult.
Album art from iTunes:
iTunes Artwork Finder is a fantastic project from Ben Dodson. Simply search for an album and you will be presented with the artwork along with options to download the standard resolution or high resolution versions. That is of course assuming the album is on iTunes.
Album art from using Image Max URL:
This is a useful little script/program/website that will try to find larger or original versions of album art by replacing URL patterns. It can be found on GitHub HERE or you can use the website directly HERE. Paste in a URL and it will try to find a larger version as the screenshot below shows.

Album art from Bandcamp:
Find the album you are looking for on Bandcamp and then right click the image and select “Open image in new tab“. This example uses Google Chrome but most modern browsers have a similar option.

The album image will then appear in a new tab. Note the URL in the address bar which is also shown below:
https://f4.bcbits.com/img/a3896774527_16.jpg
All that you need to do is replace the last part of the URL with “_0” to display the original resolution album artwork (if there is a higher version available). So the URL above would become:
https://f4.bcbits.com/img/a3896774527_0.jpg

Album art from boomkat:
This method is very similar to the Bandcamp method by changing the URL to get a higher resolution image. Find the release page and then right click the image and select “Open image in new tab“.

As you will see the URL for the image looks something like this:
https://assets.boomkat.com/spree/products/681483/large/634904058654_T17_Image.jpg
All you need to do is replace “large” with “original” like the example below:
https://assets.boomkat.com/spree/products/681483/original/634904058654_T17_Image.jpg
Now the original higher resolution image will be displayed as shown below:

Album art from Deezer:
Find the release page for the album art you want to grab. Make a note of the release number at the end of the URL as shown below.
https://www.deezer.com/en/album/105824

Now paste the album number into this URL format:
https://api.deezer.com/album/105824/
You should now see a page similar to the one in the screenshot below. If you are using Google Chrome you might need to install a JSON Viewer to get it to show correctly.

Look for the line where is has “cover_xl” and then click this to view the higher resolution artwork. You can then go a step further by editing the URL and maybe finding an even higher resolution image which can be up to 1400×1400.
Simply take the “cover_xl” URL:
https://cdns-images.dzcdn.net/images/cover/7b89203496308cecf85502ce6236594b/1000x1000-000000-80-0-0.jpg
and change it to this:
https://cdns-images.dzcdn.net/images/cover/7b89203496308cecf85502ce6236594b/1400x1400-000000-100-0-0.png
Know of anymore tricks to find higher resolution album art images? Feel free to post them in the comments below.