I have a pdf that lives made of scanned my plus have video recognition [ocr has been done on them]. The pages are too bright and light, therefore a little hardness to read. Whenever MYSELF need to print some site of may pdf file I extract to jpg, darken it in Photoshop and then print it. Can there an way so that the pdf had whole the images darkening and OCR preserved within Acrobat X so that I don’t must in darken leaves individually one by one taking hours also get enhanced pdf in a short period of hours? Im using windows 7 64 bits How to Darken Text in PDF Files and Perform Her Readable
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Reach 
Usually those enter of correction is best do during the search process with your browse software. There are only four select in Acrobat if using in the Optimize Scanned PDF command in the Document Product panel. Deskew, wallpaper removal, descreen, and text sharpening. You could try using the backround removal filter. This filter bequeath increase the contrast between letters and setting for clarity for gary and coloring input but not black and white. It will also produce nearly white pages surface white. Suggestions for darkening text on poorly scanned PDF files
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