If your PDF document or document collections include a full-text index, you can improve your search efficiency by simply searching the index for target words rather than each document separately. Steps are as follows:
- Click in the Search box on the title bar and choose Advanced Search… from the drop-down menu to open the Search panel.
- From the Where would you like to search drop-down list, choose Select Index to add indexes.
- In the pop-up Index selection dialog box, click Add to add an index. All the indexes you added will be displayed in the index list in Index selection dialog box. You can select an index, and click Info to get its file information, or click Remove to remove it from the list, if necessary. Once added, the index files will be marked as checked for you to execute index search by default. Before application, review the indexes in the list, and uncheck the unnecessary one. Upon completion, click OK to close the Index selection dialog box.
- When you have successfully added the indexes, the Currently Selected Indexes option will be selected by default. If you want to search the currently selected indexes next time, you can also choose this option from the Where would you like to search drop-down list directly.
- Follow the steps in “Searching for text and patterns” to proceed with your search.
Note: If the index file is not available or does not work, the search will fail. To create or revise an index, please refer to Create PDF indexes.