Here's how you can enjoy lossless compression
Zipping and Unzipping Files on a Chromebook
Compressing files can save storage space on your Chromebook. Zipping files also provides a quick way to share a group of files without losing data. Like Windows, macOS, and Linux, the Chrome operating system (Chrome OS) can zip and unzip files.
This tutorial will show you how to bundle files and folders into ZIP files on your Chromebook. You will also learn different ways to extract the contents of ZIP files in ChromeOS.
ChromeOS's file manager lets you bundle different file types (images, audio files, videos, etc.) into a ZIP file.