- C Search Text In Pdf File Online
- C Search Text In Pdf Files Sql Server
- C Search Text In Pdf Files
- C Search Text In File
- C Search Text In Pdf File Using C#.net
- Word Search In Pdf File
Go to Edit--> Preferences—> Search and click the checkbox for Always use Advanced Search Options. Final Thoughts. In this article, you learned how to create an index to search across multiple PDF documents. Acrobat 8 offers new indexing capabilities by allowing you to embed a full-text index in: A single PDF document; PDF package. I have a PDF article (not created by me). However, I can not search for text in the PDF. All PDF viewers I've tried return zero results for words that are obviously in there. I've tried with Adobe.
19 Apr 2015CPOL
Parsing PDF files in .NET using PDFBox and IKVM.NET (managed code).
- Download source files - 82 kB [codeproject.com]
- Download full project including all dependencies [squarepdf.net]
Update
April 20, 2015: The article and the Visual Studio project are updated and work with the latest PDFBox version (1.8.9). It's also possible to download the project with all dependencies (resolving the dependencies proved to be a bit tricky).
February 27, 2014: This article originally described parsing PDF files using PDFBox. It has been extended to include samples for IFilter and iTextSharp.
How to Parse PDF Files
There are several main methods for extracting text from PDF files in .NET:
- Microsoft IFilter interface and Adobe IFilter implementation.
- iTextSharp
- PDFBox
None of these PDF parsing solutions is perfect. We will discuss all these methods below.
1. Parsing PDF using Adobe PDF IFilter
In order to parse PDF files using IFilter interface you need the following:
- Windows 2000 or later
- Adobe Acrobat or Reader 7.0.5+ (or the standalone Adobe PDF IFilter [adobe.com])
- IFilter COM wrapper class [dotlucene.net]
Sample code:
Download a sample project:
- Parsing PDF Files using IFilter [squarepdf.net]
If you are using the PDF IFilter that comes with Adobe Acrobat Reader you will need to rename the process to 'filtdump.exe' otherwise the IFilter interface will return E_NOTIMPL error code. See more at Parsing PDF Files using IFilter [squarepdf.net].
Disadvantages:
- Using unreliable COM interop that handles IFilter interface (and the combination of IFilter COM and Adobe PDF IFilter is especially troublesome).
- A separate installation of Adobe IFilter on the target system. This can be painful if you need to distribute your indexing solution to someone else.
- You have to use 'filtdump.exe' file name for your application with the latest PDF IFilter implementation that comes with Acrobat Reader.
2. Parsing PDF using iTextSharp
iTextSharp is a .NET port of iText, a PDF manipulation library for Java. It is primarily focused on creating and not reading PDFs but it supports extracting text from PDF as well.
Sample code:
Credit: Member 10364982
Download a sample project:
- Parsing PDF Files using iTextSharp [squarepdf.net]
You may consider using LocationTextExtractionStrategy to get better precision.
Credit: Member 10140900
Disadvantages of iTextSharp:
- Licensing if you are not happy with AGPL license
3. Parsing PDF using PDFBox
PDFBox is another Java PDF library. It is also ready to be used with the original Java Lucene (see LucenePDFDocument).
Fortunately, there is a .NET version of PDFBox that is created using IKVM.NET (just download the PDFBox package).
Using PDFBox in .NET requires adding references to:
- IKVM.OpenJDK.Core.dll
- IKVM.OpenJDK.SwingAWT.dll
- pdfbox-1.8.9.dll
and copying the following files the bin directory:
- commons-logging.dll
- fontbox-1.8.9.dll
- IKVM.OpenJDK.Text.dll
- IKVM.OpenJDK.Util.dll
- IKVM.Runtime.dll
Using the PDFBox to parse PDFs is fairly easy:
Download a sample project:
- How to convert PDF files to text in C# (.NET) [squarepdf.net]
- How to convert PDF file to text in VB (.NET) [squarepdf.net]
The size of the required assemblies adds up to almost 18 MB:
- IKVM.OpenJDK.Core.dll (4 MB)
- IKVM.OpenJDK.SwingAWT.dll (6 MB)
- pdfbox-1.8.9.dll (4 MB)
- commons-logging.dll (82 kB)
- fontbox-1.8.9.dll (180 kB)
- IKVM.OpenJDK.Text.dll (800 kB)
- IKVM.OpenJDK.Util.dll (2 MB)
- IKVM.Runtime.dll (1 MB)
The speed is not so bad: Parsing the U.S. Copyright Act PDF (5.1 MB) took about 13 seconds.
Thanks to bobrien100 for improvements suggestions.
Disadvantages:
- IKVM.NET Dependencies (18 MB)
- Speed (especially the IKVM.NET warm-up time)
Related information
- See this article (with future updates) at SquarePDF.NET.
History
- April 20, 2015 - Updated to work with the latest PDFBox release (1.8.9)
- November 27, 2014 - Updated to work with the latest PDFBox release (1.8.7)
- March 10, 2014 - IFilter file name limitations added, iTextSharp sample extended
- February 27, 2014 - Samples for IFilter and iTextSharp added.
- February 24, 2014 - Updated to work with the latest PDFBox release (1.8.4)
- June 20, 2012 - Updated to work with the latest PDFBox release (1.7.0)
C Search Text In Pdf File Online
PDF is among the most popular type of documents used in businesses, due to the fact that they can be locked for editing and accidental changes. Searching for a specific word, phrase or string of words and numbers in multiple pdf documents though can be quite a nerve-racking experience.
Instructions for modifying the default settings of Windows Explorer Search
If you are using Windows 7 or the newer versions of Microsoft’s operating system, you must know that it is set to index only Microsoft Word documents into the search index of Windows Explorer by default. This means that, you may need to manually change the indexing settings if you need to search for a text in many pdf files. This can be done by accessing the Indexing options in the Control Panel, then choosing Advanced, and marking the file types you want to be added to the automatic search indexing of the Windows search. Pick pdf and click OK.
C Search Text In Pdf Files Sql Server
Try searching with Adobe Reader
Another method for searching multiple pdf files is to use Adobe Reader’s advanced search option.
Open Adobe Reader and press Ctrl + F, a search box will pop out in the top right corner. Either pick “Open Full Reader Search” from the drop down menu, or press Shift + Ctrl +F and the Advance search option will appear.
Enter the word or phrase you are looking for in the search box, and then choose the All PDF Documents in option. Pick the folder or entire directory or computer you want searched. This search even gives you an option for a case sensitive search, as well as whole words only, bookmark and comment search as well.
SeekFast
If you want an easy, fast and efficient way to perform searches of the files of your computer, you should definitely try out SeekFast.
This is a search tool which can search for a certain word or phrase in nearly any file on your computer, including PDF. It is quick and very user friendly.
It will display the top findings in accordance to the relevance of the files found. It will also allow you to quickly preview each file to see whether it is the one you are looking for.
You can easily integrate SeekFast into your Windows Explorer options, and when you go to a particular folder or directory you want to search, you just need to click on the right button and SeekFast will appear in the menu.
So no more opening and closing each pdf file by file to find the one you are looking for. Just enter your search query, and the best results will almost directly appear on your computer screen, saving you time and a lot of effort.
Foxit Reader
Foxit Reader is a shareware PDF-related tool, which will easily allow you to quickly search through multiple pdf files, which is especially useful when doing academic research, which requires finding resources in volumes and volumes of information.
C Search Text In Pdf Files
UltraFinder
C Search Text In File
UltraFinder is a powerful shareware search tool which can search one or multiple drives and folders for a specific text or text string among all of the pdf files in them.
C Search Text In Pdf File Using C#.net
![Windows Windows](https://code.msdn.microsoft.com/site/view/file/149924/1/pdf_to_text.png)
Word Search In Pdf File
The results are displayed with the sentence they are found in, for easier location of the exact file you need.
Main inconvenience of UltraFinder is that it is relatively slow.