Alteryx Foundation Micro-Credential Practice Exam

Among the options, which image file type is known for higher quality images?

1. .jpg

2. .png

3. .gif

4. .bmp

The correct answer is: .png

The .png file type is known for higher quality images primarily because it uses lossless compression, which preserves all the original image data without sacrificing quality. This means that when a .png file is saved and later reopened, it maintains the same level of detail and color accuracy as the original image. Additionally, .png files support transparency and a wider range of colors compared to some other formats, making them ideal for graphics and images that require high fidelity. In contrast, .jpg files utilize lossy compression, which reduces file size by eliminating some image data, potentially leading to a decrease in quality, especially upon repeated saving. The .gif format is mainly used for animated images and has a limited color palette, which can result in lower quality for static images compared to .png. Lastly, while .bmp files provide high-quality images as well, due to their uncompressed nature, they result in significantly larger file sizes compared to .png, making them less convenient for web use. This understanding of the characteristics of different image file types elucidates why .png is often the preferred choice for higher quality images.