PHP / backgrounds
Background Manager is a powerful replacement for the default WordPress background manager.
Registers a new custom customizer control for backgrounds.
Bernard is a multi-backend PHP library for creating background jobs for later processing.
Programmatically remove backgrounds from your images using the remove.bg api
An ACF Pro field plugin to configure CSS styles including margin, borders, padding, and backgrounds.
Generate random character (PCs or NPCs) backgrounds using the "Central Casting: Heroes of Legend" book
WordPress Plugin to support better responsive images with <picture> tag, backgrounds, retina support etc.
A quick way to make a scalable background gradient (for page backgrounds, links, and buttons, styled with CSS).
Script for automatic generation of one pixel alpha-transparent images for non-RGBA browsers to easily emulate RGBA colors in backgrounds