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Fonts substitution and name

Hi support,

I’m trying to convert a PDF created by Words (I’m working on Linux), and I have to subsitute Windows’s font by another (ie Substitute Calibri by Carlito).

I defined the replacement like this :
FontRepository.getSubstitutions().add(new SimpleFontSubstitution(“Calibri”,“Carlito”));

But when I convert document, any font has been replaced.
In my original PDF, name of Calibri is ABCDEE+Calibri so how can I replace it ?
If I modified Calibri by ABCDEE+Calibri it’s work fine but in some case prefix are not ABCDEE. I’ve the same issue with other fonts.


Florian Mélot

Hi Florian,

Thanks for contacting support.

As per my understanding, the PDF file is being generated with MS Word. Can you please share some details on how you are substituting the fonts ? If possible, please share some further details, so that we can further look into this matter. We are sorry for this inconvenience.

Hi Nayyer,

The PDF file has been generated with MS Word (I’ve attached it to this message)

I’m working on a converter which could convert any types of documents into another types of documents (some conversions are impossible) with the help of aspose.

My functionnal needed is to replace copyrighted font by free font (like Calibri / Carlito) so I’ve created a PDF based on docx document to test my application.

In some case, PDF file could be generate with embedded fonts and fonts could be prefix by some characters (generated by an algorithm). Here, prefix is ABCDEE (http://stackoverflow.com/questions/13082117/is-there-a-regex-for-pdf-font-family-and-font-names).

If I specify Calibri like orignal font and Carlito in substitution font in SimpleFontSubstitution it’s doesn’t work.

If I specify ABCDEE+Calibri (in my case), it’s work fine but prefixe (ABCDEE) are only available to this PDF.

How can I specifiy Calibri font will be replace by Carlito without prefixe ? Another class / method with regexp ?

I’ve also another questions about substitutions. I manage a XML file to load map to replace font. If I haven’t substitution font in my folder font, conversion raise an exception without information and it’s really hard to find the cause of this exception (trace is below). Is it possible to add some informations about NPE ?

at com.aspose.pdf.internal.p64.z1.m1(Unknown Source)
at com.aspose.pdf.internal.p64.z7.m2(Unknown Source)
at com.aspose.pdf.internal.p64.z1.m2(Unknown Source)
at com.aspose.pdf.internal.p66.z6.m2(Unknown Source)
at com.aspose.pdf.internal.p110.z1.m2(Unknown Source)
at com.aspose.pdf.internal.p110.z1.m1(Unknown Source)
at com.aspose.pdf.internal.p110.z1.m2(Unknown Source)
at com.aspose.pdf.internal.p110.z1.m1(Unknown Source)
at com.aspose.pdf.internal.p110.z6.m1(Unknown Source)
at com.aspose.pdf.internal.p110.z6.m1(Unknown Source)
at com.aspose.pdf.internal.p110.z6.m18(Unknown Source)
at com.aspose.pdf.internal.p110.z6.m2(Unknown Source)
at com.aspose.pdf.internal.p110.z7.m13(Unknown Source)
at com.aspose.pdf.internal.p110.z6.m1(Unknown Source)
at com.aspose.pdf.ADocument.m1(Unknown Source)
at com.aspose.pdf.Document.m1(Unknown Source)
at com.aspose.pdf.ADocument.convertInternal(Unknown Source)
at com.aspose.pdf.Document.convertInternal(Unknown Source)
at com.aspose.pdf.ADocument.convert(Unknown Source)
at com.aspose.pdf.Document.convert(Unknown Source)

Thanks in advance,

Florian Mélot

The same problem is present when I try to replace manually font (picked from http://www.aspose.com/docs/display/pdfjava/Replace+Text+in+a+PDF+Document#ReplaceTextinaPDFDocument-ReplacefontsinexistingPDFfile)

Hi Florian,

Thanks for sharing the details. I am now working on replicating the issue using recently shared document and will keep you updated with my findings.

In the same way, when I define FreeMono as substitute of Courier, it’s work fine for texts are in Courier but not working for text in Courier Bold.

It’s annoying to define correspondence for each type (italic, bold, italic bold, regular).

Hi Florian,

Thanks for your patience.

I have tested the scenario using following code snippet and as per my observations, the Calibri font is properly being embedded inside PDF file.

Furthermore, I have also tried using Courier-Bold font and as per my observations, the font is being used inside PDF file. For your reference, I have also attached the output files generated in our environment.


// Load existing PDF Document<o:p></o:p>

Document pdf = new Document("c:/pdftest/Multiples+polices (1).pdf");

// Search text fragments and set edit option as remove unused fonts

TextFragmentAbsorber absorber = new TextFragmentAbsorber(new TextEditOptions(TextEditOptions.FontReplace.RemoveUnusedFonts));

// accept the absorber for all the pages


// traverse through all the TextFragments

TextFragmentCollection textFragmentCollection = absorber.getTextFragments();

for (java.util.Iterator iterator = textFragmentCollection.iterator(); iterator.hasNext();) {

TextFragment textFragment = iterator.next();

String fontName = textFragment.getTextState().getFont().getFontName();

// if the font name is ArialMT, replace font name with Arial

//if (fontName.equals("ArialMT")) {




// Save the updated document


@codewarior So when can I do a simple substitution.
I am converting PDF to HTML and I want to do quick substitution.

Here are the steps:

  • I do pdf.getFontUtilities().getAllFonts(); to get all fonts from a document.
  • Check the directory if those fonts exists or not
  • If they do not exist i add the command FontRepository.getSubstitutions().add(new SimpleFontSubstitution(fontName, "Times New Roman"));
  • Then I do pdf.save(file, options).
  • Yet it throws font not found exception.
  • do I have to do TextFragmentAbsorber and setFont all the time ?


Thanks for contacting support.

Would you please share your sample HTML file along with complete sample code snippet. We will test the scenario in our environment and address it accordingly.