ItextSharp: iText is a PDF library that allows you to CREATE, ADAPT, of all above components we are able to create scanned PDF to Text searchable PDF. Please find my code and I want to move the pointer that section of the pdf file by searching the text on a pdf. I can give the pagenumber and. I am working for text search and extraction from pdf using third party dll itextsharp. I am getting the text on searching but not only that text, the.
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itextsharp for reproduce PDF searchable form TIFF image
April 13, 33 Comments. The goal of the organization is to digitize and make available legacy biodiversity literature. One popular feature of the BHL web site is the ability for visitors to select up to pages from a book and generate a PDF containing those pages.
More than custom PDFs are created each day. As the primary developer of the site, I want to highlight the tool that we use to generate the PDFs. The official website for the component points you to the documentation for the original Java tool. I found that these discrepancies between the Java documentation and the. NET implementation led to many instances of trial-and-error development.
I hope that this post will help illustrate how to use the iTextSharp component, and save others some frustration. To get started using iTextSharp, go to http: You can download the compiled assembly, or if you prefer, the source code. To make iTextSharp available for use in your application, simply add a reference to the iTextSharp library.
The following code samples illustrate a number of basic and advanced features of iTextSharp. Included are examples of basic text layout and formatting, image insertion, page sizing, page labeling, metadata assignment, bullet lists, and linking.
The rest of the code samples build on this one. Here is the code listing:.
AddKeywords “paper airplanes”. Ssarchable code starts by setting up the fonts that will be used within the PDF. In fact, these are used in most of the following code samples.
You searxhable see that various font faces, sizes, weights, and colors can be specified. The first significant lines of the Build method initialize the file ScienceReport.
Next, margins and page size are set. An additional form of metadata is added by the CreateXmpMetadata function, which will be explained later. After the pages are added to the document, page labels are added by populating a pdfPageLabels object and adding it to the document.
At this point the content of the document has been completely written. The only iteextsharp thing to point out in this sample is the error handling.
Catch errors of type iTextSharp. DocumentException to handle errors originating from iTextSharp operations.
How to convert pdf to searchable pdf using itextsharp in c#
The next code sample shows two methods: AddPageWithBasicFormattingwhich is one of the methods used to add a page to the document, and AddParagraphwhich is a helper function used to add a paragraph to current page of the document. It starts by calling the AddParagraph helper method to add two short text strings to the current page.
Notice that when adding a paragraph, you can specify the alignment and font to be used to render the paragraph contents. Next, a small JPG image is read from disk and inserted into the document.
The method finishes up by adding two more paragraphs to the page. The AddParagraph method simplifies the process of adding a paragraph to a document by wrapping the basic actions that need to be performed to properly format a new paragraph.
These actions include setting the alignment, font, and content.
Notice that the content is not restricted to text. Anything that supports the iTextSharp. This means that plain text, anchor tags, external links, and other objects can be used. The AddPageWithInternalLinks method, shown in the next code sample, demonstrates how to add links that reference other locations within the PDF document. If you are familiar with how to link to anchor tags in an HTML document, then you should understand what is happening in this example.
As you can see, the method is a simple one. These are references to named anchors are found in other itextshatp in the finished Itexteharp document. Creation of the named itextsharl is explained in the next code sample. Notice that as with paragraphs and other text fragments, you specify a font when creating the Anchor objects.
After the Anchor objects are created, a new page is added to the document, a paragraph of text is added to the page, and then the three Anchor objects are added to the page.
Notice that our AddParagraph helper method is used to add the Anchor objects. It shows how to create the named searchbale that were referenced searchabel the anchors created in the previous example. In addition, it shows a new concept, a bulleted list. In this method, after adding a new page to the document, a new Anchor object is created and added to the page. The important thing to notice is that this anchor is not assigned a reference; instead it is simply given a name.
This is what makes this object a… well. Add new ListItem “Lift, thrust, drag, and gravity are searvhable that act on a plane. Add new ListItem “Gravity will have less effect on a plane built from light materials.
Add new ListItem “In order to fly well, airplanes must be stable. Add new Searchabe “A plane that is unstable will searchbale pitch up into a stall, or nose-dive. After seatchable named anchor is added to the page, a List object is created. This object is used to define a bulleted list. After the Itextsnarp object has been instantiated, some additional customizations are made. These include a modification to the leading seatchable of each list item the default hyphen is changed to the bullet symbol and the indentation of the entire list.
Once these actions are complete, searchabl ListItem objects are added to the list, and the list is added to the page. The next sample is very similar to the earlier example that shows how to add links to locations within the PDF. This one shows a method that adds links to external resources. Looking at the body of the method, you can see that the image is read from disk, the page is resized to match the size of the image, and the image is added to the document.
The key thing to notice here is that searchabl modifications to the margins and page size are made before the new page is added. Modifications to margins and page size take affect when a new page is added; the current page is unaffected. Rectangle imageWidth, imageHeight. The last code sample shows a method that was called in the Build method shown in the first code sample.
You may be familiar with EXIF metadata that many digital cameras embed within photos. It can be embedded in many itestsharp of files, including PDFs.
Some reference managers and PDF cataloging tools can take advantage of itextshharp metadata if is is available. The method begins by creating an XmpSchema object and adding metadata to it. It then creates a XmpWriter object and writes the XmpSchema to a byte stream. Then and this is importantthe byte stream itextshar; shrunk to the size of the metadata that was placed into it.
Once that is done, the byte stream is written to the PDF document. A ready-to-run Visual Studio solution can be downloaded from here. The download includes all of the code samples discussed in this post. Many of them include more detail than what is shown here. If you want to skip straight to the output, an example of the PDF created by the ready-to-run code is available here.
In my own experience I found iTextSharp to be a powerful tool. It was also a frustrating tool to learn. While putting together this post, I discovered this series of posts from mikesdotnetting. I recommend those articles for further reading about iTextSharp.
Recently I got a requirement from my business in which I have to read a text file which contains multiple records of customers. I need to read complete file from itextzharp to bottom and then extract data customer wise. Hence there are two parts of my assignment ; 1- reading a text file customer wise 2- create pdf files customer wise. That should give you the very basics you need to read information from a text file.
This post describes the steps required to write the information to PDFs, and you can also read through the excellent series of posts found at mikesdotnetting.
c# – Search Particular Word in PDF using Itextsharp – Stack Overflow
searchagle Is it simple to just use it for something like this? Id like to just add a button to my page export to PDF something along those seqrchable. An old thread at the asp. OK, I had some time to give this a try this evening, using as a starting point the example code on the ASP. If the image paths and I suspect the paths to other resources are not fully qualified i. So, if your pages contain very basic HTML, or if you can grab just a simplified block of HTML rather than an entire pagethen you might have success.
I meant not the physical dimension of image was before inserted. I meant the size of the image inside the pdf. If you mean the size in bytes of the image, then just check the size of the image outside the PDF. If you are asking about the dimensions in pixels of an image after it is inserted into the PDF, then that is something you can control.
By default, an image is not scaled when placed into the PDF.