Graphic Images
What is an Image format?
Image file formats are used to store digital images and can be categorized into raster and vector formats. Each format has its own characteristics, advantages, and use cases.
What is Lossy compression?
– some data or quality is lost during compression.
Define JPEG / JPG
A lossy compression format designed for small file sizes by merging similar pixel colors. It is the standard for most photos and web images but does not support transparency.
What is the meaning of SVG and what makes it different from the other formats?
Not based on pixels, but rather on mathematical code that describes shapes. This allows it to scale infinitely without losing quality, commonly used for vector-based graphics.
What is the difference between Lossless compression and Lossy compression?
Lossy Compression reduces file size by intentionally discarding data that the human eye is unlikely to notice.
Lossless Compression preserves every pixel exactly as it was
How many image formats we studied in class? mention them.
JPG
PNG
TIFF
GIF
WEBP
SVG
RAW
ICO
name the image format that compress the most of quality to reduce the file size.
JPG
What is PNG?
Uses lossless compression to preserve image quality and supports a transparency channel (alpha), making it ideal for logos, icons, and graphics.
When we take or upload a photo in our phones, which is the default output format?
JPG - JPEG
What is Compression
refers to how an image is saved in order to reduce the file size.
What is Transparency?
– the background of an image is “see-through” so that the graphic can blend into the background without having a white box around it.
Does not support animation. Does not support transparency
JPG
RAW
Explain the Disadvatage of Vector Based formats like SVG?
It is not ideal for photographs or highly detailed images because capturing fine textures and details can not be calculated.
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Which format is used for Website favicons & app shortcuts
ICO
Mention the formats that support animation
GIF
WEBp
Mention the Image formats that support transparent backgrounds
PNG
WEBp
GIF
SVG
Mention the formats that can be replaced by WebP
A modern format developed by Google designed to replace JPEG, PNG, and GIF by combining their strengths—supporting lossy/lossless compression, transparency, and animation.
Name the biggest advantage of JPEG
its ability to significantly compress image file sizes while retaining reasonable visual quality, making it ideal for storage and transmission.
Which format is used for professional printing and archival storage where quality cannot be compromised
TIFF
What is Lossless compression?
– no data or quality is lost during compression.
What is the difference between Pixel Based and Vector Based image formats?
Pixel based: These images are composed of a fixed grid of individual squares called pixels Each pixel holds specific color information.
Vector Based: are essentially text files containing code that describes shapes, lines, curves, and colors using math
Which format is the only one that preserves 100% of the data and quality of the photos?
RAW
In which format you can zoom in as much as you want without loosing quality?
SVG
A Windows icon format that stores multiple versions of an image at different sizes, commonly seen as desktop icons and browser favicons.
ICO