Unit 78 : Research
File Extensions : File extensions are what defines files from each other. It controls what programmes can open it and how it can be used. For example : a PNG file is an image file which can be open with programmes that allow you to view/edit images but it cannot be opened by document programmes such as word pad as it is the wrong format. For word pad you need a DOC file or any other type of text file and this could be opened in word pad, word, etc. Also there are different types of the same file. For example, an image can be saved as a PNG, JPEG and GIF. The difference between them is the quality of the image and it can affect how they are edited too. The link below has all the information on the different image file extensions. https://www.labnol.org/software/tutorials/jpeg-vs-png-image-quality-or-bandwidth/5385/ Compression : compression is the process of changing the format of a file which results in lower storage usage. For example, JPG takes up more ...