What Do I Need To Read Data From Any File Type?

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What do I need to read data from any file type, from pictures to pptx or txt or pdf, etc.?

If you need to be able to compress any file, then you don't have to use anything that's file-specific - you need a compression algorithm that treats files as just a bag of bytes and nothing more. This is the difference between .ZIP files and .PNG files, for example - ZIP/RAR/etc. work by finding repeating sequences of bytes and assigning shorter representations to them, while PNG uses knowledge of what the data is, namely pixels with colors, and creates a palette to represent that information. Both compression can fully recover the original data, but for an image you'll get better compression ratios with PNG than just zipping a bitmap file. There are also other types of specific compression algorithms, for example lossy ones like JPG and MP3 that use knowledge of the human visual/auditory system to further reduce the amount of stored data. To get you started on your task, you might want to look up Huffman coding - it's one of the simplest algorithms that actually yields decent results.

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Type on PDF: All You Need to Know

How compression works To compress data to something usable, a compression algorithm should take in a description of the data, and output a string that can be easily decoded by an algorithm. There are a lot of different ways to represent data, though — most compression algorithms use one of 4 main forms or combinations of these, which we call block, vector, fixed-length, or variable length. One way or combination of these 4 algorithms: a) block compression: takes 3 things in sequence, then puts them in a bag, and compresses each element separately b) vector compression: takes two pieces of content in sequence, and compresses them on top of each other. If both are larger than a fixed size, then just the first takes up the whole bag of stuff, without the extra bits having to be kept. This is like taking a bag of chocolate bars and wrapping each chocolate bar individually. c).

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