We are glad to announce the release of Spire.PDF for Java 5.3.1. This version supports converting PDF to a Grayscale document. Besides, it enhances the conversion from PDF to PDFA1B. In addition, it fixes some known issues such as the obtained ComBoxField item value is incorrect. More details are listed below.
Here is a list of changes made in this release
| Category | ID | Description |
| New feature | SPIREPDF-4915 | Supports converting a pdf to a grayscale document.
PdfGrayConverter converter = new PdfGrayConverter("ConvertToGrayPdf.pdf");
converter.toGrayPdf("output.pdf");
|
| Bug | SPIREPDF-4741 | Fixes the issue that the obtained ComBoxField item value was incorrect. |
| Bug | SPIREPDF-4873 | Optimizes the memory releasing issue when converting PDF to PDFA1B. |
| Bug | SPIREPDF-4926 | Fixes the issue that the application threw "String index out of range" when getting PDF used fonts. |
| Bug | SPIREPDF-4949 | Fixes the issue that the format was incorrect after setting middle for both vertical alignment and horizontal alignment. |
| Bug | SPIREPDF-4956 | Fixes the issue that the application threw "OutOfMemoryError" after compressing images. |
| Bug | SPIREPDF-4967 | Fixes the issue that the obtained PDF conformance was incorrect. |
| Bug | SPIREPDF-4974 | Fixes the issue that the application threw "NullPointerException" when getting PDF image information. |
Click the link below to download Spire.PDF for Java 5.3.1:
