Using GIMP: Correcting and Touching Up Your Images - GIMP 2.6 for Photographers: Image Editing with Open Source Software - page 77

Figure 2.16
By choosing File > Open Location, you can open an image from a network address or a website.
Here are a few tips:
• You can “bookmark” a folder that you'll be using frequently. Select the
folder in the middle pane and click the Add button at the bottom of the
left pane. The folder now appears in the left pane. To open, just click it.
• Clicking the drop-down menu saying All images will display a list of file
formats GIMP can read. If you select a specific format from the list, the file
browser will display only files in that particular format.
• You'll also see an option called Select File Type , which is set to Automatically
detected by default. Clicking this button will provide a pop-up window
listing file formats. If GIMP doesn't automatically recognize the format of
the image you selected, you can use this option to specify the file format.