What effect does increasing the image resolution have?

Increasing the image resolution means that more pixels are used to represent the image. Each pixel contributes to the level of detail in the image – the higher the resolution, the more pixels there are packed into the same area and the finer the detail that can be displayed. This results in a clearer and more precise image, capturing subtle details that lower resolutions may miss.

However, because more pixels are utilized in a higher resolution image, this also leads to an increase in file size. Each pixel contains data which contributes to the overall size of the file. Higher resolutions typically require more storage space, making file sizes larger. This combination of increased detail and larger file sizes fundamentally defines the outcome of increasing image resolution.