File Types, Sizes, Compression, and Conversions`

Flashcards covering file types, dimensions, sizes, lossy or lossless compression classifications, OS shortcuts, and bit-to-byte mathematical conversions.

Page of Plain Text (.txt)

A plain text page containing about $500\text{ words}$ or $2500\text{ characters}$. In ASCII, each character is one byte ($2500\text{ bytes}$ total), and it is lossless.

.jpg Image

A file type for one photo with a typical size of $3\text{--}8\text{ mb}$ that uses lossy compression.

Animated .gif Image

A file type measured in two dimensions with a typical size of $256\text{ kb}$ that uses lossy compression.

.pdf File

A file type where two pages equal $50\text{--}200\text{ kb}$ in size and uses lossless compression.

Audio File as .mp3

A file type representing a two minute song with a size of $3\text{--}8\text{ mb}$ and categorized as lossless.

Movie File (.mov or .mp4)

A file type representing 1 hour - 2 hours with a size of $2\text{--}4\text{ terabytes}$ and categorized as lossless.

8 by 8 Pixelation Image Byte Calculation

Calculation for an 8 by 8 image using 12 bits per pixel ($768\text{ bits}$) converted to bytes via $768 / 8 = 96\text{ bytes}$.