Image Editing Export and File Formats 1 — Questions and Answers
Question 1: Which file format is best for photographs that need to be shared on the web with small file sizes?
- BMP
- TIFF
- JPEG (Correct answer)
- PSD
Correct answer: JPEG
JPEG uses lossy compression to produce small file sizes ideal for web photographs, though it discards some image data each save.
Question 2: What type of compression does the PNG format use?
- Lossy compression like JPEG
- Lossless compression that retains all pixel data (Correct answer)
- No compression at all
- Run-length encoding only
Correct answer: Lossless compression that retains all pixel data
PNG uses lossless compression, meaning no image data is discarded and the file can be re-saved repeatedly without quality loss.
Question 3: What is the main advantage of the WebP format over JPEG for web use?
- It supports higher color depths
- It provides better compression with comparable quality, resulting in smaller file sizes (Correct answer)
- It supports CMYK color mode
- It stores RAW data
Correct answer: It provides better compression with comparable quality, resulting in smaller file sizes
WebP achieves significantly smaller file sizes than JPEG at similar visual quality, reducing page load times for websites.
Question 4: Which image format supports a transparent (alpha) channel, making it suitable for logos on web pages?
- JPEG
- BMP
- PNG (Correct answer)
- TIFF without alpha
Correct answer: PNG
PNG supports an alpha (transparency) channel, allowing areas of the image to be fully or partially transparent on web pages.
Question 5: What does 'color profile embedding' do when exporting an image?
- Changes the color mode to CMYK
- Stores the color space information so receiving software can accurately interpret and display the colors (Correct answer)
- Compresses colors to reduce file size
- Converts to indexed color
Correct answer: Stores the color space information so receiving software can accurately interpret and display the colors
Embedding a color profile (such as sRGB or Adobe RGB) tags the file so that other applications and devices can correctly interpret the intended colors.
Question 6: What is the DPI/PPI setting important for when exporting images for print?
- Controls web page loading speed
- Determines the print resolution — how many dots of ink per inch are used (Correct answer)
- Affects the color mode only
- Controls the canvas size in pixels
Correct answer: Determines the print resolution — how many dots of ink per inch are used
DPI (dots per inch) determines print sharpness — 300 DPI is the standard for high-quality print, while 72 DPI is screen resolution.
Image Editing Export and File Formats 1
Which file format is best for photographs that need to be shared on the web with small file sizes?