Tracking file size

File size depends on the pixel dimensions of an image and the number of layers contained in the image. Images with more pixels may produce more detail when printed, but they require more disk space to store and may be slower to edit and print. You should keep track of your file sizes to make sure the files are not becoming too large for your purposes. If the file is becoming too large, reduce the number of layers in the image or change the image size.

To track file size:

Select the Document Sizes option in the status bar. (See Using the status bar.)

The first (left) value indicates the size of the file if flattened. The second (right) value shows the estimated file size of the unflattened file.

Using Layers > Managing layered images > Tracking file size