Just as we evaluate websources, we also need to evaluate images and their context.
Analysis:
Find the Context:
Understand the Visual Communication:
Source of Imagery:
Questions adapted from the ACRL Visual Literacy Competency Standards for Higher Education Standards 3.1,3.2, 4.1, 4.3, 4.4.
Physical and technical components:
Questions adapted from the ACRL Visual Literacy Competency Standards for Higher Education Standards 3.3, 4.2.
Pixel is a single point that makes up an image. Pixelation is when an image is displayed at such a large size that individual pixels become visible.
File Size is the amount of space an image takes up when saved, typically measured in kilobytes (KB) or mega bytes (MB). example:61.8 KB
Resolution is a measure of sharpness or quality of an image, typically measured by the number of pixels or dots per inch.
When you are searching for images, pay attention to the size and resolution because you may want larger images for powerpoints or other projects.
While JPG or JPEG is the most popular type of image file format on the web, there may be other options that are better for you. Explore the links below to learn about compression and other factors that influence choosing an image file format.