How to Make a Thumbnail in IrfanView


IrfanView, a free image editing program, helps users convert images into different formats and sizes. You may never need to enlarge an image, but one day, you may need to generate thumbnails. Thumbnails allow an application to display many images in a small area. Windows Explorer, for example, displays thumbnails when you select one of its "Show Icons" options. Thumbnails on a Web page help site owners display photo galleries and product catalogs. Using IrfanView's "Thumbnail" feature, you can convert images into thumbnails quickly.

Set Thumbnail Options

  • Download IrfanView and install it if you do not have the software. Find the installation file at the IrfanView website.

  • Launch IrfanView and click "File."

  • Click "T" to open the "IrfanView Thumbnails" window.

  • Click "Options," and then click "Set Thumbnail Options." The "Thumbnail Options" window opens. Put a check mark in the "Thumbnail Quality" check box.

  • Click the "Pixels" drop-down box to view a list of possible thumbnail sizes. The default size is "80*80." That generates a thumbnail 80 pixels wide and 80 pixels high.

  • Click one of the pixel sizes to select it. Click "Paint Thumbnail Borders" if you want a border around the thumbnail. Click "OK" to close the "Thumbnail Options" window and return to the "IrfanView Thumbnails" window that lists your computer's folders.

Create Thumbnail

  • Navigate to the folder containing the image you wish to convert to a thumbnail.

  • Double-click that folder. Thumbnails of the folder's image files will appear on the right side of the window.

  • Right-click the image you would like to convert. A drop-down menu appears. Click "Save Selected Thumbs as Single Images." The "Browse for Folder" pop-up dialog opens and displays your hard drive's folders.

  • Click the folder you want to use to hold the thumbnail, and then click "OK." IrfanView stores the thumbnail in the selected folder.

Tips & Warnings

  • To convert all images in a folder to thumbnails, navigate to the desired folder as described in the previous section. Double-click the folder, and press "Ctrl" and "A" to select all images. Right-click any image in the folder, and click "Save Selected Thumbs as Single Images." When the "Browse to Folder" window opens, click the destination folder to select it, and then click "OK."

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