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Syncfusion Feedback

How to perform font substitution in Word to PDF conversion?

Platform: ASP.NET Web Forms |
Control: DocIO |
Published Date: February 23, 2018 |
Last Revised Date: February 23, 2018

When the necessary fonts used in the Word document has not been installed in the production machine, then Essential DocIO uses the ”Microsoft Sans Serif” as default font for rendering the text. Due to this font substitution, you could see the difference with the rendered text in the generated PDF/Image files during Word to PDF/Image conversion. To know more about the default font substitution, please refer here.


From 2018 Volume 1 release (v16.1.0.24) onwards, Syncfusion provides support to  perform font substitution using event approach while converting a particular Word document as PDF. So, that you can choose any installed font instead of ”Microsoft Sans Serif”.


The following code example illustrates how to trigger `SubstituteFont` event during font substitution in Word to PDF conversion. A runnable sample application can be downloaded from here





The following code example illustrates how to set the alternate font when a specified font is not installed in the production environment by using `SubstituteFontEventHandler`.





If you have any questions or require clarification about this support, please let us know in the comments below. You can also contact us through our support forum or Direct Trac. We are happy to assist you as always!

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Tomasz Jagusz
Dec 17, 2018

Ideally, there should be a property in Word Document that would return a list of used fonts.
This way the user will be able to check if necessary fonts are installed before starting PDF Conversion.

Dilli Babu Nandha Gopal [Syncfusion]
Dec 26, 2018

Hi Tomasz,


This requirement has been considered as a feature request. Kindly visit our website periodically for feature related updates.



Dilli babu.


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