Digital Images and File Formats

These flashcards cover key vocabulary related to digital images, file formats, and terms associated with optimization and copyright.

Pixel

A small square that is the basic unit of a digital image, standing for 'picture element'.

Bitmap

A type of image format that represents an image as a grid of pixels.

Color depth

The number of bits used to represent the color of a single pixel, affecting how many colors the image can display.

Compression

The process of reducing the size of a file by encoding information more efficiently.

Lossless compression

A type of data compression where the original data can be perfectly reconstructed from the compressed data.

Lossy compression

A method of data compression that sacrifices some data to reduce file size, which may affect quality.

JPEG

A commonly used image format that uses lossy compression and is best for photographs.

GIF

An image format that supports lossless compression, animation, and a color depth of up to 256 colors.

PNG

An image format that also uses lossless compression and supports a high color depth and alpha transparency.

Data structure

The organization and format of data in a file, determining how it can be stored and accessed.

Inline images

Images that are part of a document's content, inserted using HTML.

Background images

Images that form the background of a document, typically set via CSS, affecting the design.

Copyright

A legal protection that grants the creator rights over the use and distribution of their works.

Creative Commons

A type of licensing that allows creators to specify how their work can be used by others.

Optimization

The process of improving an image's quality while minimizing its file size.

Metadata

Data that provides information about other data, such as image characteristics or source.