When searching for "zip file downloads," always prioritize reputable sources. Avoid sites that: Require you to download an .exe file to get the images.
: Subreddits like r/wallpaper frequently feature "wallpaper dumps" where users share massive collections of 4K images hosted via Google Drive or Mega links in a single zip. 4k Wallpaper Zip File Download For Pc -
If you don’t trust pre-made packs: