How does file compression/ZIP files work?

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I understand it’s to save file space, but like…how?

Follow-up: If you have to compress a photo to save on file size (when emailing, for example) couldn’t it just send essentially a text file on how to uncompress it back to its original size and quality? (ex. “Set the resolution to XxY and add X color at Y pixels”)

Thank you!

In: Engineering

9 Answers

Anonymous 0 Comments

Instead of repeating something, it’s more efficient to have a way to say you repeated that something instead.

If you have a bunch of images making a video, it’s better to just say these images are repeats then repeating them. This can be abstracted to a lot of types of data.

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