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reduce pdf size with iText. GitHub Gist: instantly share code, notes, and snippets. iText Shrinking the Content – Learn iText in simple and easy steps starting from basic to advanced concepts with examples including Overview, Creating a PDF. 6 Jul iText compression modes. I’m using iText in my application with very good results . However the people looking at the resulting PDFs are.

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For a reference compare the file size of a pdf and a postScript rendition of the same file, the pdf will be smaller. It seems fine if I do not include any images but the moment I do JasperReports seems to iqnore my compression settings.

This is only possible since PDF version 1. As you can see, compressing as many objects as possible is the most effective option in this example, but be aware that the compression percentage largely depends on the type of content in the document.

The constructor of this class accepts a string, representing the path ietxt the file where the PDF is to be created. SetFullCompression and it shrunk my file from kb to whopping kb.

Jan 11 – 6: In smart mode when resources such as fonts, images, You are looking on the wrong place. Image to reduce the quality. Itet currently using iReports 5. Sets the certificate encryption options for the document. Buy the iText book: The frustrating thing is that I’ve compared the PDFs I’m creating with equivalent ones from their old application, and they are almost always smaller – sometimes spectacularly so.

So it is not wokring that good. On leaving the GSi this email was certified virus free. By using our site, you acknowledge that you have read and iitext our Cookie PolicyPrivacy Policyand our Terms of Service.


If enabled, not only the content of the pdf document will be compressed, but also the pdf document inner structure.

Again, however, all of this is generated from a set of input data that is probably the most concise representation of your PDF file you will get. The following Java program demonstrates how to shrink contents of a PDF itexr using the iText library. They apparently choose not to see this as significant.

java – Can we compress PDF file size using iText? – Stack Overflow

Please treat our communications in confidence, as you would expect us to treat yours. Hi, I’m fairly new to JasperReports so I apologize now.

In this case the ownerPassword is replaced by a random string. Bruno Lowagie iText wrote: Image compression of course is often lossy, and you may not have a losssless restriction. You can try to set a compression level when using iText: By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

But I am unable to reduce the size of the generated pdf. I’m using iText in my application with very good results. Mar 18 – 1: The result is a document whose PDF syntax can be seen in the content streams of each page when opened in a text editor.

I am using iText to read and manipulating PDF files reports. In reply to this post by Tony Stevens As I understand it, iText itself does not compress images, due to ‘potential’ legal implications. In reply to this post by scriptoid scriptoid wrote: You could even try some lossless data compression things like bzip2 I guess but again it is better and faster if “you” the compression algorithms know what is in the data rather than having to guess or discover it.


How do you compress a PDF that contains images? I think simplicity may be the key to circumventing their objections. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

This requires more memory, but reduces the file size of the resulting PDF document. This class belongs to the package com. If you really do want minimum file size and don’t care about speed or other attributes and can tolerate lossy compression, there are a lot of options.

This “input data” would in fact be something like a “decomposition” of your PDF if you had a way to do that as is done with audio in something like ACELP but this would be lossless- ACELP tries to fit an arbitrary waveform to a limited input model and doesn’t always work, you already have the input data.

I’m having difficulty compressing my PDF. While I’m at it, I could also look at the encryption of embedded file stream. What I can’t figure out is where these different levels of compression come into play.

Instantiate the Document class by passing the object of the class PdfDocumentas shown below. Hi Newfoundland Mark, Understand that pdf format is portable document format.

Reduce image

Bruno Lowagie iText wrote Bruno Lowagie wrote: Suppose your PDF contains confidential information that should only be seen by a limited number of people.

In the resulting PDF file, content streams will be compreess, but so will some other objects, such as the cross-reference table. MaheshVarma 1, 4 21