If you PDF is scanned or image-based PDF, it is non editable or non searchable. However, you can use our program to perform OCR to turn your scanned PDF into searchable or editable file.
1) After opening scanned PDF, please click 
Edit>OCR. 
 
2) A windows box will therefore pop up and please choose the OCR language to be matched with your document language under
 Change Languages tab. Then remember to click 
OK.
 
3) And you can choose 
Searchable Text Image or 
Editable Text for performing OCR.  Click 
OK to start OCR process.
 
4) If you turn your scanned PDF into editable PDF after performing OCR, you can click 
Edit and choose
 Line Mode or 
Paragraph Mode to start editing.
 
If you turn your scanned PDF into searchable PDF after performing OCR, you can click 
search button to open the search panel. Then input the word you want to search. By beginning search, not only all of the search results will be listed in the search panel but also the matched words will be highlighted in the file. 
