Page proofreading method and apparatus

A page proofreading apparatus, comprising:

• a split unit, configured to split a document before modification to at least one single page document file before modification, split a document after modification to at least one single page document file after modification, each of the single page document files before modification contains:
• a single page document before modification and a corresponding preview thereof, each of the single page document files after modification contains:
• a single page document after modification and a corresponding preview thereof;
• a storage unit, configured to add the at least one single page document before modification split by the split unit into a first page, add the at least one single page document after modification split by the split unit into a second page;
• a correlating unit, configured to set correlativity between each of the single page documents before modification that is stored in the first page by the storage unit and each of the single page documents after modification that is stored in the second page by the storage unit;
• a comparing unit, configured to compare pixel elements of the previews of the single page document before modification and the single page document after modification that have the correlativity set by the correlating unit for all of the first pages and the second pages, the pixel element including a pixel value and a gray value of the pixel;
• a display unit, if there are different parts between the single page document before modification and the single page document after modification, configured to display the comparison result by marking the different parts