Rendering problem on some PDF files.

[PeaceGiver]

I notice that there's some rendering problem on some PDF files.
I bought FlexiPDF 2022 from Ashampoo and preordered 2025 version, and I tried trial verion of FlexiPDF 2025 from official site. Both 2022 and 2025 cannot render it correctly.
This is the PDF file I using to test PDF reader or editors.

T客邦好友禮，【10個ChatGPT的好工具】電子書.pdf

This is the PDF file I using to test PDF readers/editors.

(39.05 MiB) Downloaded 114 times

[SuperTech]

Please share some more details of the problem like where exactly you are getting this problem, screenshot of the problem etc.

[Woody44]

I just encountered an issue with rendering through the FlexiPDF virtual printer from Microsoft Word.

I participate fairly regularly on an Internet forum for authors. A forum member recently posted about not being able to find a font that seems to be a perfect match for a printed book whose interior design (typesetting) he wanted to emulate. The font was Garamond, but he said all the versions he tried looked a little lighter than the book whose appearance he wanted to match. He then discovered a feature in Microsoft Word that allows using an outline to increase the visual thickness of the strokes in a font.

This was news to me so, of course, I had to try it. I created a sample paragraph in Word, used the Text Effects feature to add an outline with a line thickness of 0.25 points, and then converted to PDF using three different methods:

• Word Export to PDF

• Print to the PDF using DoPDF7

• Print to PDF using the FlexiPDF virtual printer

The quality of the base test (using the non-enhanced font -- in this case Times New Roman) was pretty much the same in all three PDFs. However, the quality of the "enhanced" text was best using export to PDF directly from Word, was worse "printing" to PDF using DoPDF7, and was considerably worse when "printed" to PDF using the FlexiPDF virtual printer.

In the interest of a direct comparison, all three screen shots were made with the sample PDFs opened in Adobe Reader XI.

Word export to PDF:

DoPDF7 virtual printer:

FlexiPDF 2022 virtual printer:

The quality of the "enhanced" text is worse in each successive sample. The degradation of the character rendering becomes even more apparent at larger degrees of enlargement.

[SuperTech]

Since other virtual printers are experiencing the same or even more issues, it appears the problem lies with the software where you tried this new feature. We recommend reporting the issue to their forum or support team.

Alternatively, you could wait for their upcoming updates, as they might address the problem with this feature in a future release.

[martin-k]

Using a stroke to make a font bolder is a horrible idea, typographically speaking.