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how to add svg in pdf document iText

I'm using iTextRenderer() to convert html (String) to pdf file. I would like to add on end pdf file, image as svg. I'm using JFreeChart to create SVG File.
File file = new File("D:\\testowy.txt"); //html in string
File outPDF = new File("D:\\testww.pdf"); //output pdf
ITextRenderer renderer = new ITextRenderer();
renderer.setDocumentFromString(IOUtils.readUtf(file));
renderer.layout();
renderer.createPDF(new BufferedOutputStream(new FileOutputStream(outPDF)));
Below picture shows how appearance my pdf. The svg file doesnt creat correct.
The text "7e5a7f..." is a SVG.
I tried use framework PDF, but the text is skip and only svg is created.
PdfDocument doc = new PdfDocument(
new PdfWriter(new FileOutputStream(outPDF),
new WriterProperties().setCompressionLevel(0)));
doc.addNewPage();
SvgConverter.drawOnDocument(IOUtils.readUtf(file), doc, 1);
doc.close();

iText 7 Html to Pdf conversion and linking external file to the generated pdf

I am encountering an issue while merging two PDFs generated out of IText.
I am new to iText7
I am creating one pdf from html and creating another pdf with excel(.xls) as embedded document to pdf.
I want to merge the 2 files.
Basically I want to generate a PDF from html then attach a excel document to it and then output combined html outPutStream from these two pdfs.
Below is the code I am using
ByteArrayOutputStream htmlToPdfContent = new ByteArrayOutputStream();
PdfWriter writer = new PdfWriter(htmlToPdfContent);
PdfDocument pdf = new PdfDocument(writer);
pdf.setTagged();
PageSize pageSize = PageSize.A4.rotate();
pdf.setDefaultPageSize(pageSize);
ConverterProperties properties = new ConverterProperties();
HtmlConverter.convertToPdf(htmlContent, pdf, properties);
FileUtils.cleanDirectory(new File(outputDir));
ByteArrayOutputStream pdfResult = new ByteArrayOutputStream();
PdfWriter writerResult = new PdfWriter(pdfResult);
PdfDocument pdfDocResult = new PdfDocument(writerResult);
PdfReader reader = new PdfReader(new ByteArrayInputStream(htmlToPdfContent.toByteArray()));
PdfDocument pdfDoc = new PdfDocument(reader);
pdfDoc.copyPagesTo(1, pdfDoc.getNumberOfPages(), pdfDocResult);
ByteArrayOutputStream pdfAttach = new ByteArrayOutputStream();
PdfDocument pdfLaunch = new PdfDocument(new PdfWriter(pdfAttach));
Rectangle rect = new Rectangle(36, 700, 100, 100);
byte[] embeddedFileContentBytes = Files.readAllBytes(Paths.get(excelPath));
PdfFileSpec fs = PdfFileSpec.createEmbeddedFileSpec(pdfLaunch, embeddedFileContentBytes, null, "test.xlsx", null, null);
PdfAnnotation attachment = new PdfFileAttachmentAnnotation(rect, fs)
.setContents("Click me");
pdfLaunch.addNewPage().addAnnotation(attachment);
PdfDocument appliedChanges = new PdfDocument(new PdfReader(new ByteArrayInputStream(pdfAttach.toByteArray())));
appliedChanges.copyPagesTo(1, appliedChanges.getNumberOfPages(), pdfDocResult);
try(OutputStream outputStream = new FileOutputStream(dest)) {
pdfResult.writeTo(outputStream);
}
This is throwing exception
13:56:05.724 [main] ERROR com.itextpdf.kernel.pdf.PdfReader - Error occurred while reading cross reference table. Cross reference table will be rebuilt.
com.itextpdf.io.IOException: Error at file pointer 19,272.
at com.itextpdf.io.source.PdfTokenizer.throwError(PdfTokenizer.java:678)
at com.itextpdf.kernel.pdf.PdfReader.readXrefSection(PdfReader.java:801)
at com.itextpdf.kernel.pdf.PdfReader.readXref(PdfReader.java:774)
at com.itextpdf.kernel.pdf.PdfReader.readPdf(PdfReader.java:538)
at com.itextpdf.kernel.pdf.PdfDocument.open(PdfDocument.java:1818)
at com.itextpdf.kernel.pdf.PdfDocument.<init>(PdfDocument.java:238)
at com.itextpdf.kernel.pdf.PdfDocument.<init>(PdfDocument.java:221)
at com.mediaocean.prisma.order.command.infrastructure.pdf.itext.PdfAttachmentLaunch.main(PdfAttachmentLaunch.java:76)
Caused by: com.itextpdf.io.IOException: xref subsection not found.
... 8 common frames omitted
Exception in thread "main" com.itextpdf.kernel.PdfException: Trailer not found.
at com.itextpdf.kernel.pdf.PdfReader.rebuildXref(PdfReader.java:1064)
at com.itextpdf.kernel.pdf.PdfReader.readPdf(PdfReader.java:543)
at com.itextpdf.kernel.pdf.PdfDocument.open(PdfDocument.java:1818)
at com.itextpdf.kernel.pdf.PdfDocument.<init>(PdfDocument.java:238)
at com.itextpdf.kernel.pdf.PdfDocument.<init>(PdfDocument.java:221)
at com.mediaocean.prisma.order.command.infrastructure.pdf.itext.PdfAttachmentLaunch.main(PdfAttachmentLaunch.java:88)
13:56:05.773 [main] ERROR com.itextpdf.kernel.pdf.PdfReader - Error occurred while reading cross reference table. Cross reference table will be rebuilt.
com.itextpdf.io.IOException: PDF startxref not found.
at com.itextpdf.io.source.PdfTokenizer.getStartxref(PdfTokenizer.java:262)
at com.itextpdf.kernel.pdf.PdfReader.readXref(PdfReader.java:753)
at com.itextpdf.kernel.pdf.PdfReader.readPdf(PdfReader.java:538)
at com.itextpdf.kernel.pdf.PdfDocument.open(PdfDocument.java:1818)
at com.itextpdf.kernel.pdf.PdfDocument.<init>(PdfDocument.java:238)
at com.itextpdf.kernel.pdf.PdfDocument.<init>(PdfDocument.java:221)
at com.mediaocean.prisma.order.command.infrastructure.pdf.itext.PdfAttachmentLaunch.main(PdfAttachmentLaunch.java:88)
Please advise. Thanks in advance !!

Concerning revision 2 of your question
You changed your code differently than proposed in my answer to the first revision of your question, you now convert into the formerly unused PdfDocument pdf instead of directly into the ByteArrayOutputStream htmlToPdfContent.
This actually also is a possible fix of the problem identified in that answer. Thus, you don't get an exception here anymore:
PdfReader reader = new PdfReader(new ByteArrayInputStream(htmlToPdfContent.toByteArray()));
PdfDocument pdfDoc = new PdfDocument(reader);
Instead you now get an exception further down the flow, here:
PdfDocument appliedChanges = new PdfDocument(new PdfReader(new ByteArrayInputStream(pdfAttach.toByteArray())));
And the reason is simple, you have not yet closed the PdfDocument pdfLaunch which writes to the ByteArrayOutputStream pdfAttach. But only closing finalizes the PDF in the output stream. Thus, add the close():
ByteArrayOutputStream pdfAttach = new ByteArrayOutputStream();
PdfDocument pdfLaunch = new PdfDocument(new PdfWriter(pdfAttach));
[...]
pdfLaunch.addNewPage().addAnnotation(attachment);
pdfLaunch.close(); //<==== added
PdfDocument appliedChanges = new PdfDocument(new PdfReader(new ByteArrayInputStream(pdfAttach.toByteArray())));
And you actually do the same mistake again, shortly after, you store the contents of the ByteArrayOutputStream pdfResult to outputStream without closing the PdfDocument pdfDocResult which writes to pdfResult. Thus, also add a close call there:
appliedChanges.copyPagesTo(1, appliedChanges.getNumberOfPages(), pdfDocResult);
pdfDocResult.close(); //<==== added
try(OutputStream outputStream = new FileOutputStream(dest)) {
pdfResult.writeTo(outputStream);
}
Concerning revision 1 of your question
You use the ByteArrayOutputStream htmlToPdfContent as target of two distinct PDF generators, the PdfDocument pdf via the PdfWriter writer and the HtmlConverter.convertToPdf call:
ByteArrayOutputStream htmlToPdfContent = new ByteArrayOutputStream();
PdfWriter writer = new PdfWriter(htmlToPdfContent);
PdfDocument pdf = new PdfDocument(writer);
pdf.setTagged();
PageSize pageSize = PageSize.A4.rotate();
pdf.setDefaultPageSize(pageSize);
ConverterProperties properties = new ConverterProperties();
HtmlConverter.convertToPdf(content, htmlToPdfContent, properties);
This makes the content of htmlToPdfContent a hodgepodge of the outputs of both of them, in particular not a valid PDF.
As you don't add any content to pdf, you can safely remove it and reduce the above excerpt to
ByteArrayOutputStream htmlToPdfContent = new ByteArrayOutputStream();
ConverterProperties properties = new ConverterProperties();
HtmlConverter.convertToPdf(content, htmlToPdfContent, properties);

Add Empty/Blank Page to PdfDocument java

It is there any way to add a Blank Page to an existing PdfDocument ? I've created a method like this:
public void addEmptyPage(PdfDocument pdfDocument){
pdfDocument.addNewPage();
pdfDocument.close();
}
However , when I use it with a PdfDocument , it throws :
com.itextpdf.kernel.PdfException: There is no associate PdfWriter for making indirects.
at com.itextpdf.kernel.pdf.PdfObject.makeIndirect(PdfObject.java:228) ~[kernel-7.1.1.jar:?]
at com.itextpdf.kernel.pdf.PdfObject.makeIndirect(PdfObject.java:248) ~[kernel-7.1.1.jar:?]
at com.itextpdf.kernel.pdf.PdfPage.<init>(PdfPage.java:104) ~[kernel-7.1.1.jar:?]
at com.itextpdf.kernel.pdf.PdfDocument.addNewPage(PdfDocument.java:416) ~[kernel-7.1.1.jar:?]
Which is the correct way to insert a Blank page into a pdf document?

com.itextpdf.kernel.PdfException: There is no associate PdfWriter for making indirects.
That exception indicates that you initialize your PdfDocument with only a PdfReader, no PdfWriter. You don't show your PdfDocument instantiation code but I assume you do something like this:
PdfReader reader = new PdfReader(SOURCE);
PdfDocument document = new PdfDocument(reader);
Such documents are for reading only. (Actually you can do some minor manipulations but nothing as big as adding pages.)
If you want to edit a PDF, initialize your PdfDocument with both a PdfReader and a PdfWriter, e.g.
PdfReader reader = new PdfReader(SOURCE);
PdfWriter writer = new PdfWriter(DESTINATION);
PdfDocument document = new PdfDocument(reader, writer);
If you want to store the edited file at the same location as the original file,
you must not use the same file name as SOURCE in the PdfReader and as DESTINATION in the PdfWriter.
Either first write to a temporary file, close all participating objects, and then replace the original file with the temporary file:
PdfReader reader = new PdfReader("document.pdf");
PdfWriter writer = new PdfWriter("document-temp.pdf");
PdfDocument document = new PdfDocument(reader, writer);
...
document.close();
Path filePath = Path.of("document.pdf");
Path tempPath = Path.of("document-temp.pdf");
Files.move(tempPath, filePath, StandardCopyOption.REPLACE_EXISTING);
Or read the original file into a byte[] and initialize the PdfReader from that array:
PdfReader reader = new PdfReader(new ByteArrayInputStream(Files.readAllBytes(Path.of("document.pdf"))));
PdfWriter writer = new PdfWriter("document.pdf");
PdfDocument document = new PdfDocument(reader, writer);
...
document.close();

iText PdfCopy creates editable pdf document

I have a template pdf file which is used in a spring boot application. I need to update values in this template based on user input per request. Also in the request i will get multiple pdf files I need to merge those files along with updated file which is first page of final pdf.
I am using iText with Spring Boot. I am able to update the values in template and merge file content as well but final pdf is coming as editable with files are hidden. If i click on that filed i can able to see my values also can able to edit.
public void mergefiles(Map<String, String> tempData,MultipartFile[] userInfoFiles)
throws Exception{
FileOutputStream mergeOutStream = new FileOutputStream(new File("C:\\UpdateFile\\mergepath\\updatetem.pdf")); //To update user content to Template
PdfReader reader = new PdfReader(new FileInputStream(new File("C:\\UpdateFile\\template\\template.pdf"))); //Template File Stream
PdfStamper stamper = new PdfStamper(reader, mergeOutStream);
stamper.setFormFlattening(false);
AcroFields form = stamper.getAcroFields();
Map<String, Item> fieldMap = form.getFields();
for (String key : fieldMap.keySet()) {
String fieldValue = dataMap.get(key);
if (fieldValue != null) {
form.setField(key, fieldValue);
}
}
//Above part creates updated pdf with read only
//Below section creates merged file but first page is editable with
//filed values are hidden.
Document mergePdfDoc = new Document();
PdfCopy pdfCopy;
boolean smartCopy = false;
FileOutputStream newmergeOutStream = new FileOutputStream(new File("C:\\UpdateFile\\mergepath\\newmerged.pdf"));
if(smartCopy)
pdfCopy = new PdfSmartCopy(mergePdfDoc, newmergeOutStream);
else
pdfCopy = new PdfCopy(mergePdfDoc, newmergeOutStream);
mergePdfDoc.open();
pdfCopy.addDocument(stamper.getReader());
pdfCopy.freeReader(stamper.getReader());
PdfReader[] pdfReader = new PdfReader[userInfoFiles.length];
for(int i=0; i<=userInfoFiles.length-1;i++) {
pdfReader[i] = new PdfReader(userInfoFiles[i].getInputStream());
pdfCopy.addDocument(pdfReader[i]);
pdfCopy.freeReader(pdfReader[i]);
pdfReader[i].close();
}
stamper.close();
mergeOutStream.close();
mergePdfDoc.close();
}
Any input why final pdf is in editable form and filed values are hidden. I have to create a merged document and get ByteArray stream of the final document as its input to another function call.I am Using iText5.

The problem is that you add the PdfReader the PdfStamper is based on as input to your PdfCopy:
pdfCopy.addDocument(stamper.getReader());
The reader a stamper works on is dirty: some changes applied via the stamper are made to the objects the reader holds, some are only in the stamper or its output.
E.g. in your case the form fields are already defined in the original pdf. The field value is added to this field directly. Thus, it gets changed in the reader. But the appearance, the field visualization including a drawing of its current value, gets generated in a new indirect object which is added to the stamper output. Thus, there still is the original, empty visualization in the reader.
In a pdf viewer, therefore, the PdfCopy result at first has the looks of empty fields (as the appearances have been generated in the stamper only) but when editing a field, the changed value becomes visible (because the field editor is initialized with the field value).
To fix this, don't use the dirty reader but instead create a new, clean reader from the stamping result.
First create the stamped file:
FileOutputStream mergeOutStream = new FileOutputStream(new File("C:\\UpdateFile\\mergepath\\updatetem.pdf")); //To update user content to Template
PdfReader reader = new PdfReader(new FileInputStream(new File("C:\\UpdateFile\\template\\template.pdf"))); //Template File Stream
PdfStamper stamper = new PdfStamper(reader, mergeOutStream);
stamper.setFormFlattening(false);
AcroFields form = stamper.getAcroFields();
Map<String, Item> fieldMap = form.getFields();
for (String key : fieldMap.keySet()) {
String fieldValue = dataMap.get(key);
if (fieldValue != null) {
form.setField(key, fieldValue);
}
}
stamper.close();
And then merge:
Document mergePdfDoc = new Document();
PdfCopy pdfCopy;
boolean smartCopy = false;
FileOutputStream newmergeOutStream = new FileOutputStream(new File("C:\\UpdateFile\\mergepath\\newmerged.pdf"));
if(smartCopy)
pdfCopy = new PdfSmartCopy(mergePdfDoc, newmergeOutStream);
else
pdfCopy = new PdfCopy(mergePdfDoc, newmergeOutStream);
mergePdfDoc.open();
PdfReader reader = new PdfReader(new FileInputStream(new File("C:\\UpdateFile\\mergepath\\updatetem.pdf")));
pdfCopy.addDocument(reader);
pdfCopy.freeReader(reader);
PdfReader[] pdfReader = new PdfReader[userInfoFiles.length];
for(int i=0; i<=userInfoFiles.length-1;i++) {
pdfReader[i] = new PdfReader(userInfoFiles[i].getInputStream());
pdfCopy.addDocument(pdfReader[i]);
pdfCopy.freeReader(pdfReader[i]);
pdfReader[i].close();
}
mergeOutStream.close();
mergePdfDoc.close();
}

How to add an image in the last page of pdf using iText?

How do i add an image on the last page of existing PDF document. Please help me.

The following example adds an image to the second page of an existing pdf using Itext 5.
String src = "c:/in.pdf;
String dest = "c:/out.pdf";
String IMG = "C:/image.jpg";
try {
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
com.itextpdf.text.Image image = com.itextpdf.text.Image.getInstance(IMG);
image.setAbsolutePosition(36, 400);
PdfContentByte over = stamper.getOverContent(2);
over.addImage(image);
stamper.close();
reader.close();
} catch (Exception e) {
e.printStackTrace();
}

You can read the text from the PDF using the same ITEXT library.Try this
PdfReader reader = new PdfReader(INPUTFILE);
int n = reader.getNumberOfPages();
PdfTextExtractor parser =new PdfTextExtractor(new PdfReader("C:/Text.pdf"));
parser.getTextFromPage(3); // Extracting the content from a particular page.
After you have add your data ,You can load images either from file or from a URL, like this:
Image image1 = Image.getInstance("watermark.png");
document.add(image1);
String imageUrl = "http://applause-voice.com/wp-content/uploads/2011/04/1hello.jpg";
Image image2 = Image.getInstance(new URL(imageUrl));
document.add(image2);
If you will add this code at the end of your Java Program , then the image will automatically comes at the end of your page.

The best solution for me was to create a new in-memory PDF document with the image I want to add, then copy this page to the original document.
// Create a separate doc for image
var pdfDocWithImageOutStream = new ByteArrayOutputStream();
var pdfDocWithImage = new PdfDocument(new PdfWriter(pdfDocWithImageOutStream).setSmartMode(true));
var docWithImage = new Document(pdfDocWithImage, destinationPdf.getDefaultPageSize());
// Add image to the doc
docWithImage.add(image);
// Close the doc to save data
docWithImage.close();
pdfDocWithImage.close();
// Open the same doc for reading
pdfDocWithImage = new PdfDocument(new PdfReader(new ByteArrayInputStream(pdfDocWithImageOutStream.toByteArray())));
docWithImage = new Document(pdfDocWithImage, destinationPdf.getDefaultPageSize());
// Copy page to original (destinationPdf)
pdfDocWithImage.copyPagesTo(1, pdfDocWithImage.getNumberOfPages(), destinationPdf);
docWithImage.close();
pdfDocWithImage.close();