If you already own the game, you can use archiving tools to compress the game folder for backing up, which is a safer way to manage space. How to Install a Repacked Game (If You Choose This Path)
Get the game legally, and your adventures in Tamriel will be not only epic but also secure.
A truly highly compressed version of Skyrim (e.g., under 3 GB) will almost certainly have missing features, broken dialogue, or potato-quality graphics. A good repack (4 GB–6 GB) will extract back to the full 11 GB but requires a long installation time.
Many "highly compressed" links found on social media or unofficial sites are fronts for malware that can harm your PC. Corrupted Data:
The Ultimate Guide to Downloading The Elder Scrolls V: Skyrim Highly Compressed
Smaller files mean less time spent waiting for the download to finish.
Download The Elder Scrolls V: Skyrim Highly Compressed: The Ultimate Guide