Khan Academy
Khan Academy: Lossless File Compression
Practice using lossless text and image compression algorithms and considering what data can be compressed most easily.
Other
Learn the Net: Download Files
This resource provides an excellent set of instructions on how to save files to your hard drive and how to download software, as well as an overview on file formats and extensions.
Khan Academy
Khan Academy: Lossless Bit Compression
Computers represent all data in binary, so all types of files, from text to images to videos, are ultimately sequences of bits. Regardless of whether the bits represent a document or a GIF, computers can use a bit compression technique...
Khan Academy
Khan Academy: Lossy vs. Lossless Compression
Check your understanding of lossy and lossless compression techniques, in this set of free practice questions designed for AP Computer Science Principles students.
Khan Academy
Khan Academy: How Can Computers Reduce File Size?
Reducing the file size using Lossless and Lossy for file compression.
Khan Academy
Khan Academy: Simple Image Compression
Lossless single image compression by using the algorithm run-length encoding (RLE).
Goodwill
Gcf Global: Tech Savvy Tips and Tricks: Working With Zip Files
Learn how zip files work for storage and transmission of files.