HEIR to PNG Converter dialog box appears, click “Select” to choose your desired HEIR picture. Note: this is the only HEIR file type you can click for conversion. Batch-convert HEIR to JPG on Mac and Windows PC? · 1. Click to select the photos you want to batch convert. · 2. After selecting the files, click the “Select All Files” button. · 3. Then click “Convert” to convert all selected .had photos. When the HEIR to PNG Converter dialog box appears, click “Select” to select your desired HEIR image.