decky-steamgriddb VS Playnite

But if you've got Deckyloader installed there's also this plugin to change all the artworks from within SteamOS as well.

It only automatically downloads images if you add them as a shortcut with the plugin. If you want something just for the images, there is an official SteamGridDB plugin like the other comment said. That plugin also allows for much better control like choosing from a selection of images and such.

You can install Decky and the SteamGridDB plugin to make the Steam integration look pretty.

There is a decky plugin that allows this (and more) in game mode. See: SteamGridDB

You can use Decky and the plugin for SteamgridDB to customize the logo, cover, header, etc.

If you install the SteamGridDB plugin through Decky if you have it, you can easily add all the game art to custom games.

Easiest way is with this. "Hero" is what you need to download the image for.

There's a plugin for Decky that can search through Steam Grid within the native steam menus and auto apply them without having to go to desktop mode, I use that and it's amazing. I did link to it's GitHub but it is also available in the Decky store page thing

I've done something similar before with Playnite (an open-source PC game library manager), which has an HLTB plugin.

Playnite: The one with the most features and libraries available via addons and has a lot of options for customization. In my opinion the best one available for this purpose.

Here's a project for Playnite 11: https://github.com/JosefNemec/Playnite/milestone/9

As for my LGO, the only other app I've installed outside of the standard launcher was Playnite to consolidate all games into one place as Legion Space doesn't detect everything I have installed and I don't want to manage manually adding games to their launcher.

use playnite instead of the individual launchers.

Here is where I come in and recommend everyone check out Playnite: https://playnite.link/

When I care about supporting a developer or publisher and they offer their product on their own storefront DRM-free, I will often go there to buy. Or I buy from GoG which takes a smaller cut. Playnite lets me launch my Steam and non-Steam games in a seamless fashion. Steam still does a great job as a game installer/patch manager, and helps me discover new games. But I'm not locked into paying them a 30% fee, which is pretty brutal for some smaller publishers.

Game Launcher https://playnite.link/

For anyone with any of the myriad of HDR monitors that prefers to leave desktop mode in SDR RGB, I just discovered that the excellent Playnite game launcher has a feature where you can enable HDR on a per-game basis. Simply tick the "Enable HDR support" option under "Advanced" tab for the settings of the games that you want HDR turned on for. I was previously using the now-abandoned AutoActions for this, so glad to see there's an alternative in a tool I already use.

Not exactly what you are looking for, but I've been using Playnite to launch everything on my computer for years.