When using images on your user forms consideration must be given to the impact on load times during specification.
This article gives some guidelines on using images on your user forms.
The main formats used for images are:
| Format | Notes |
|---|---|
| JPG | Used mainly for high color photographs. Does not support transparency. |
| PNG | Recommended format for computer generated graphics. Gives good quality, smallest file size and maximum compatibility. Transparency supported. |
| BMP | Best quality but large file size. Does not support transparency. |
| GIF | Good alternative to PNG. |
Ideally your image should have the smallest file size possible. Consideration should be given to the load times of each user form, especially if it will be used through DriveWorks Live in a web browser.
If many images are required to be loaded at once into a user form, the load time will be impacted if the images have not been optimized.
Dynamic Images
DriveWorks will only load the images required when the user form is navigated to. Images that appear based on selections made on that user form will be loaded on demand.
The height and width of the image and the PPI (pixels per inch) affect the size of the image file.
iPad Image Loading
We have found that individual images that are too large will not be loaded at all when viewed on an iPad.
The optimal PPI setting for images that are to be viewed on the iPad is 96 PPI.
We have found the following programs have good image editing features.
GIMP www.gimp.org
Snag-It http://www.techsmith.com/snagit.html
Paint.NET http://www.getpaint.net/
Photoshop http://www.adobe.com/products/photoshopfamily.html
| Knowledge Base Article Ref: | KB13010802 |
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