First of all, let’s compare the original image below. You can see that the size is 439K.
After we import the image into PS, there are two ways to achieve it.
First method: We click [Image]-[Image Size] (shortcut key CTLR ALT I) to lower the resolution of the image.
Second method: This method is the most common. We use the shortcut key CTLR ALT SHIFT S to store the picture in the format used by the Web.
Then we click the small arrow next to the preset and select [Optimize File Size] in the pop-up menu.
Fill in the desired file size in the file size setting, and finally confirm and save.
After saving, we can see that the processed image file size is obviously much smaller than before.
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