Convert PDF text to better quality

I've a scanned image who's text i开发者_StackOverflow社区s selectable and searchable. In other words it no longer is an image. But the quality of how the text looks is really poor (as if it were a scanned image). Is there a tool I can use to fix this?

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OCR tools often show the bit-map to hide the text they get wrong. What OCR tool did you use?

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Just try a Select All (Ctrl + A or similar) and then copy/paste into some kind of tect-based editor (i.e. Microsoft Word, Notepad, Emacs... etc).

This will show you the raw text (without the bitmap image) - however, be prepared for OCR errors!