MobHealthIndicators Mod
This mod renders a health bar on top of all mobs and players. It works fully client-side, with options to enable blacklist, whitelist, light level-based rendering (renders the health bar at the same light level as the mob) and more. The mod can also be fully disabled using the settings accessible via the /MobHealthIndicators in-game command, configuration screen or keybind.
This mod is fully client-side, even on servers; however, installing it on the server will not have any effect. aside from this, it is also compatible with resource packs, meaning it will use the heart texture from your resource pack for consistency.
!a image showing a side by side comparaison of the mod with resource packs on vs off
MobHealthIndicators Configuration Commands
Use /MobHealthIndicators or /mhi for short to list all settings and their current values. Typing a command without the suffix shows the current value.

