What is data compression

What is Data Compression?

Data compression is the process of reducing the size of a file by encoding the data it contains more efficiently. The goal is to represent the same information using fewer bits, making the file smaller without losing the content that matters.

Compressed files take up less storage space and can be transmitted more quickly over a network. A compressed image, audio track, or document can be sent in a fraction of the time the original would require. Compression is used widely - in web pages, streaming video, email attachments, and app downloads - wherever reducing file size brings a practical benefit.

Original file compress Smaller file e.g. 10 MB e.g. 3 MB

 Key Takeaways

  • Data compression reduces file size by encoding information more efficiently, using fewer bits to represent the same data.
  • Compression reduces storage requirements and speeds up file transmission over networks.
  • Compression is used in almost all modern file types including images, audio, video, and documents.