| strFile | String | Yes | String containing the path of the file. |
| nWidth | Number | Yes | Maximum width of the image (or 0 to ignore this parameter). |
| nHeight | Number | No | Optional parameter which specifies the maximum height of the image (or 0 to ignore this parameter). |
| nEffect | Thumbnail (Enumeration) | No | Optional parameter containing the thumbnail effect to use. |
| nBackgroundColor | Number | No | Optional parameter containing the background color to use if a special thumbnail effect is applied. |
| bWebFilter | Boolean | No | Optional parameter which enables or disables the internet filter. If this parameter is true only web formats are accepted (GIF, JPEG, PNG). |
| strSaveAs | String | No | Optional string containing the output file. |
| nFormat | Format (Enumeration) | No | Optional parameter which specifies the desired file format. |