[
https://issues.apache.org/jira/browse/PDFBOX-2690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Brian Liu updated PDFBOX-2690:
------------------------------
Description:
I am using PDFBox 1.8.8 to manipulate existing PDF files. After saving a
document, the output file becomes several times larger than the original. This
is undesirable.
**How to reproduce my problem:**
In the following code, PDFBox simply loads an existing PDF and then save it.
Nothing else is done. Yet the file size still becomes several times larger.
{code}
import java.io.*;
import org.apache.pdfbox.pdmodel.*;
import org.apache.pdfbox.exceptions.*;
class Test
{
public static void main(String[] args) throws IOException,
COSVisitorException {
PDDocument document = PDDocument.load("input1.pdf");
document.save("output.pdf");
document.close();
}
}
{code}
Below are links to two sample input files. For input1.pdf, file size increases
from 6MB to 50MB. For input2.pdf, file size increases from 0.4MB to 1.3MB.
https://dl.dropboxusercontent.com/u/13566649/samplePDF/input1.pdf
https://dl.dropboxusercontent.com/u/13566649/samplePDF/input2.pdf
**Possible reason**
Tilman Hausherr suggests that there is an enormous amount of "structure"
information / object stream that is compressed in the input file, but not in
the output file.
was:
I am using PDFBox 1.8.8 to manipulate existing PDF files. After saving a
document, the output file becomes several times larger than the original. This
is undesirable.
How to reproduce my problem:
========================
In the following code, PDFBox simply loads an existing PDF and then save it.
Nothing else is done. Yet the file size still becomes several times larger.
{code}
import java.io.*;
import org.apache.pdfbox.pdmodel.*;
import org.apache.pdfbox.exceptions.*;
class Test
{
public static void main(String[] args) throws IOException,
COSVisitorException {
PDDocument document = PDDocument.load("input1.pdf");
document.save("output.pdf");
document.close();
}
}
{code}
Below are links to two sample input files. For input1.pdf, file size increases
from 6MB to 50MB. For input2.pdf, file size increases from 0.4MB to 1.3MB.
https://dl.dropboxusercontent.com/u/13566649/samplePDF/input1.pdf
https://dl.dropboxusercontent.com/u/13566649/samplePDF/input2.pdf
Possible reason
============
Tilman Hausherr suggests that there is an enormous amount of "structure"
information / object stream that is compressed in the input file, but not in
the output file.
> Filesize becomes extremely large after saving
> ---------------------------------------------
>
> Key: PDFBOX-2690
> URL: https://issues.apache.org/jira/browse/PDFBOX-2690
> Project: PDFBox
> Issue Type: Bug
> Components: Writing
> Affects Versions: 1.8.8, 1.8.9, 2.0.0
> Environment: PDFBox 1.8.8, Java8u25, Windows 8.1
> Reporter: Brian Liu
> Attachments: input2-after-save.pdf, input2.pdf
>
>
> I am using PDFBox 1.8.8 to manipulate existing PDF files. After saving a
> document, the output file becomes several times larger than the original.
> This is undesirable.
> **How to reproduce my problem:**
> In the following code, PDFBox simply loads an existing PDF and then save it.
> Nothing else is done. Yet the file size still becomes several times larger.
> {code}
> import java.io.*;
> import org.apache.pdfbox.pdmodel.*;
> import org.apache.pdfbox.exceptions.*;
> class Test
> {
> public static void main(String[] args) throws IOException,
> COSVisitorException {
> PDDocument document = PDDocument.load("input1.pdf");
> document.save("output.pdf");
> document.close();
> }
> }
> {code}
> Below are links to two sample input files. For input1.pdf, file size
> increases from 6MB to 50MB. For input2.pdf, file size increases from 0.4MB to
> 1.3MB.
> https://dl.dropboxusercontent.com/u/13566649/samplePDF/input1.pdf
> https://dl.dropboxusercontent.com/u/13566649/samplePDF/input2.pdf
> **Possible reason**
> Tilman Hausherr suggests that there is an enormous amount of "structure"
> information / object stream that is compressed in the input file, but not in
> the output file.
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