Kofax Clarity image guidelines
When processing documents using the Kofax Clarity recognition engine, use the following guidelines to ensure that your images are successfully processed. These are guidelines only. Some images may fail even if they fit into these ranges. Others may exceed the limits and are processed successfully.
- TIF/TIFF images
The size on disk should not exceed 2.5MB per page.
This limit applies to each page and there is no limit on the number of pages allowed in a document.
- PNG images
The size on disk of these images should not exceed 5MB.
- JPG/JPEG images
For this type of image, the compression rate determines image size.
For a picture that is compressed with a high compression rate, the size of the image on disk should not exceed 1MB.
For a picture that is compressed with a low or normal compression rate, the size of the image on disk should not exceed 3MB.
- PDF files with encoded images
A PDF is a container format that can contain images that are encoded in various formats such as PNG or JPG. A PDF file has no maximum size restriction. However, there is a size limit for each page that contains an encoded image.
The page size limit depends on the type of encoding used. The maximum page size limit matches the image type limits listed above. For example, if the encoded image is a PNG file then the maximum page size cannot exceed 5MB.
If image processing fails because of the image size, the Kofax Clarity recognition engine returns an error. If the error occurs while you are testing recognition in Project Builder, an error is displayed so that you are aware that there is a problem. In production, the error is written to the log file and the page is handled as an empty page for further processing.