v3.3 is a release file of the Minecraft resource pack VanillaFix, made for Minecraft 1.16-Snapshot, 1.16.3, 1.13.1, 1.15-Snapshot, 1.16.1, 1.14.4, 1.14.1, 1.14.3, 1.15, 1.16, 1.13, 1.15.2 and more. It was published on September 23, 2020 and is 1.1 MB in size. For the full description, screenshots and every other version, visit the VanillaFix resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.