Step by step guide for adding images to an existing sitemap.

Step 1: Open sitemap. Click on "Open file from Internet" menu.

Step 2: Write down or select sitemap URL amd click on "Open" button.

Step 3: Select sitemap type (Google images sitemap).

Step 4: Click on "Images" button on toolbar.

Step 5: Click on "Start" button on opened dialog.

Step 6: Wait until crawling process will complete