PDFlib Personalization Server在突破PDF文档静态成果的基础上进一步强化了PDF的概念。为了能更容易、更快速的打印可变数据,PDFlib引入了一个概念------"块是PDF的一个新特性"。根据引入的"PDFlib Blocks"概念,PDFlib为PDF文档个人服务所引起的有负面作用问题提供了一个解决方案。

| 
                 Feature  | 
                
                 PDF form fields  | 
                
                 PDFlib Blocks  | 
            
| 
                 design objective  | 
                
                 designed for interactive use  | 
                
                 designed for automated filling  | 
            
| 
                 typographic features (beyond choice of font and font size)  | 
                
                 -  | 
                
                 kerning, word and character spacing, underline, overline, strikeout  | 
            
| 
                 font control  | 
                
                 font embedding  | 
                
                 font embedding and subsetting, encoding  | 
            
| 
                 merged result is integral part of PDF page description  | 
                
                 no  | 
                
                 yes  | 
            
| 
                 users can edit merged field contents  | 
                
                 yes  | 
                
                 no  | 
            
| 
                 extensible set of properties  | 
                
                    | 
                
                 yes (custom block properties)  | 
            
| 
                 color support  | 
                
                 RGB  | 
                
                 grayscale, RGB, CMYK, spot color, Lab  | 
            
| 
                 PDF/X compatible  | 
                
                 no  | 
                
                 yes (both template with blocks and merged results)  | 
            
| 
                 graphics and text properties can be overridden upon filling  | 
                
                 no  | 
                
                 yes  |