In default easy pdf invoice using DejaVu Sans font. This font does not support for Thai characters so your PDF will look like this below image.

 

In order to fix this you just need to change the font of your PDF template.

We have two fonts for Thai language if you want to have your own font please contact to our support team.

You can change the font of your PDF by using this css code

body .easypdf-template-001{font: 16px THSarabunNew;}

or

body .easypdf-template-001{font: 12px "Circular-Thai";}


With easypdf-template-001 is the code which depends on base PDF template which you are using.

 

 

Let see the result

 

 

If you are using Local PDF Processor you may need to download the font package, extract and upload it to this folder:
app/code/community/VES/PdfProProcessor/Pdf/lib/fonts
Click Here to download the font package.