Some time ago I created this simple addon that manages 360 ° background of the hdrihaven website which is fantastic and I participate in donations monthly.
One of the strong points of this addon is the "Shader catcher FX" which in a single click creates a material that absorbs the shadow of the background and allows you to have the 'Shader catcher' effect on a plane, even in EEVEE with the backgrounds in the library, which by the way are 330 ready to use.
Now I have completely redesigned the interface and created much larger previews with square proportions, these serve a lot to actually see a portion of the background proportionately.
And I added some convenient features, I hope my users will be happy with this free update.
For those who want a discount I leave a 20% coupon with the code hdrimkr20.