Choosing search folder

Setup is simple — just inform the program of the folder(s) in which your documents are stored. To do this, click on the ‘next’ button on the setup screen and select the folder(s).

Choosing settings

After you select the folder, you can select initial settings of the application. These are document types to search (PDF is default), backup folder selection or startup option. If you have taken the backup of index database before, this is a good point to select that folder.

Start Indexing

Then click on “Start” to begin indexing the selected folder; the time required to index the folder is a function of the number and size of the documents.


Indexing Process

PDF Search needs to index documents to enable search functionality. Indexing is an automated process which happens after you choose a new search folder or a change happened on current search folders. All changes are automatically detected. So if new documents are copied into search folders, they are automatically indexed. Same apply for deletion. Deleted documents are automatically deleted from index database.

Indexing is a one-time, time-consuming and energy-consuming process. If you are using a MacBook, we recommend you to plug in your charger until it is finished. Also please note that indexing process may auto-restart the application sometimes to manage the process. It is normal. Some PDF documents may not be in standard format or may have invalid page structure. Although these documents can be viewed, the indexing of them may take a long time or fail. We recommend you to move these kind of documents out of search folders when you detect them. Non-PDF documents need to be converted to PDF format before they can be indexed. Conversion is also a time-consuming and energy-consuming process. Indexing runs only while PDF Search is open. So we suggest you to let PDF Search finishes indexing before close. You can choose to index in background from exit window.

You can pause and resume indexing process. You can choose to pause or continue the indexing process when the application is first opened. In addition to this, you can use "Application Menu -> Index".

Folder Structure

The application indexes 2 types of folders. These are shown as root folders on navigation sidebar. And folder navigation starts with these folders.

iCloud Folder

This is the application folder on your iCloud Drive. If you have activated iCloud Drive, this folder is automatically created. And any documents under this folder is indexed. Also you can use this folder to share documents with you iPhone or iPad. Any documents copied to this folder is automatically synced to your other iOS or macOS devices.

Local Folders

These are the folders which selected as search folders from setup screen or preferences window. All documents under these folder are indexed. When you add or delete some documents from these folders, it is autoamtically detected by the PDF Search app.

Resetting Indexes

You can reset the settings and indexes using preferences window.

Index data location

Default location of the application is under default system drive. However, you can select a custom location using "Application Menu -> Index -> Change Database Location"

Backup/Restore Index Data

Because indexing can be a long process, especially if you have a huge document library, it is useful to make a backup of the index data. This way, you can perform faster indexing when you re-install your computer. To do that you can use "Application Menu -> Index -> Backup Index Database" or you can use preferences window.

To use backup folder, you should select that as restore folder. You can do that on setup screen or preferences window. When there is valid backup folder selected, app first check this backup database if the document is indexed before and use that data directly. This will speed up your indexing time for most of the cases.


Start search

After indexing is finished, you can search documents easily. Just enter any term in search box and press enter.

As you enter text into the search-box, the suggestion list will update dynamically. When you completed the entry of the search term, hit "Enter" to see the documents that contain the target search term. After you select a suggestion from the list by pressing enter key or mouse click, you may continue to type another keyword or press enter key second time to start search.

How Search Works

PDF Search algorithm calculates a rank value for every page in documents according to keywords you entered. These ranks are computed as follows:.

  • Keyword Distance : Pages containing keywords nearer to each other have a higher rank.
  • Keyword Density : Pages containing more keywords have a higher rank.
  • Importance : Pages that contain the keywords in the title or that are rendered in bold or a larger font will have a higher rank.
  • Document Date: Pages within more recent files are ranked more highly than older files.

When a search is completed, PDF Search displays the page having the highest rank, highlighting keywords by color(s).

Search Patterns

You can use below operators for advances search capabilities

  • Quotes "..."
  • When you make using search quotes it only take pages containing keywords exactly in quotes.

    Search Keyword Result
    Shows pages only containing exactly same keywords together like 'advanced economies'
    Shows pages containing advanced and economies keywords seperately ordering by relevancy. For example : 'Economies in advanced class will not be effected too much.'

  • Plus Sign (+)
  • If you put plus (+) sign before a keyword, resulting pages will always contain that keyword

    Search Keyword Result
    Pages not containing economies keyword will not be in result list.

  • Minus Sign (-)
  • If you put minus (-) sign before a keyword, pages containing that keyword will be discarded from search results.

    Search Keyword Result
    Pages containing 'economies' keyword will not be in result list.

  • Wild Char (*)
  • You can use wildchar character to search the keywords starting or ending with some characters.

    Search Keyword Result
    Search will be done for kewyords starting with 'econom' like 'econom, economy, economies, econometric, economic, etc...'
    Search will be done for kewyords ending with 'ty' like 'quality, productivity, equality, security, etc...'
    Search will be done for kewyords starting with 'pr' and ending with 't' like 'product, present, president, project, etc...'

Filter Documents

You can filter documents to narrate the documents to be searched. PDF Search supports 3 types of filtering for documents.

Folder Based Filtering

You can navigate through root folders and subfolders by double clicking on them. After you open a subfolder, search scope is narrated to that folder automatically. When you search, only documents under that folder is searched.

Filter By Path

At the left-bottom corner of the documents window, there is a filtering field. Using this you can filter documents by location path including the filename. For example you have java documents and these documents containing 'java' kewyord in their file name. When you write "java" and press enter in this fields, all documents under active folder will be searched for whether their path conatining "java" keyword or not. Later searches will be done over this resulting list.

Filter By Tag

Using filtering field or using Tags tab on the left sidebar, you can filter documents by tag name.

Export Search Results

After you make a search, you can export search results as a new PDF document. To export, use share button on toolbar and choose "Export Search Results" option.

Exporting search result will generate a new PDF document. This document will contain all the best related pages from different documents sorted by rank. You can customize the exporting process using Preferences Window.


You can tag documents to group them under one label. Then you can easily find those tagged documents or make search over them. Tag information is shared between iOS and macOS devices through iCloud drive. So when you change a tag on one device, this will be autoamtically synced to other devices if iCloud Drive is enabled on them.

Tag a document

To tag a document you can use tag button on toolbar or document list. After you press tag button, a popup window will appear. Just enter desired tag name into that popup and press enter.

Remove a tag

You can use the same popup window to delete a tag from document. Just open tag popup, and then click on desired tag to delete.

Navigate Tags

Use Tags tab on the left side bar to navigate through all tags. Also you can use search button next to tag to search documents under that tag.


You can put bookmarks on pages of documents. This will enable you to find a page easily.

Add a bookmark to document

Just use the bookmark button on the toolbar to add a bookmark for active open page. You can add a note to the bookmark. While searching documents, these notes will be added to the page data and will be searchable.

Navigate/Delete Bookmarks

To navige or delete bookmark, open bookmark tab on the sidebar. You can find all bookmarks here grouped by documents. To delete, find the related bookmark and just press the delete button next to it.