File Size Reduction
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File size reduction is crucial for storing, sharing, and loading digital images effectively and efficiently
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It becomes especially important when dealing with large images or limited storage space
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One common way to reduce file size is by reducing the image resolution
- Image resolution refers to the amount of detail an image has
- The higher the resolution, the more pixels the image has, and the larger the file size
- Reducing resolution decreases the number of pixels and therefore reduces file size
- Be aware that reducing resolution can cause a loss of image quality, especially when viewed at larger sizes
- The image on the right has a lower resolution than the one on the left
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Another method to reduce file size is by reducing the colour depth of an image
- Colour depth, also known as bit depth, refers to the number of bits used to represent the colour of a single pixel
- The more bits used, the more colours can be represented, but the larger the file size
- Reducing colour depth means using fewer bits and therefore fewer colours, which can reduce the file size
- Like with resolution, reducing colour depth can lead to a loss of image quality, resulting in an image that looks more "flat" or "posterised"