Arch Linux

Eternex49

Member

Registered: 2022-07-08

Posts: 12

[SOLVED] Blurry pdf rendering in masterpdfeditor-free

All pdfs rendered by masterpdfeditor-free are very blurry.

As I hope you can see from the image I posted the text is quite blurry, not from zooming in or something like that, but only when the file containing it is open in masterpdfeditor-free.
Antialiasing is active (without it it's even worse).
As much as I've searched online for other people with the same problem, I haven't been able to find anyone else.

Last edited by Eternex49 (2023-07-30 15:44:31)

teckk

Member

Registered: 2013-02-21

Posts: 585

Re: [SOLVED] Blurry pdf rendering in masterpdfeditor-free

My first thought is to use something else. There are lots of pdf rendering softwares for Linux. There is cairo, poppler, ghostscript, mupdf, webkit, webengine, etc. All of which can be python scripted or compiled into c c++ executable to make/render pdfs.

pdf readers
https://wiki.archlinux.org/title/List_o … F_and_DjVu
https://wiki.archlinux.org/title/PDF,_P … Vu#Viewers

Unless my browser isn't working right, there is no image on your post.

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,129

Re: [SOLVED] Blurry pdf rendering in masterpdfeditor-free

https://i.imgur.com/Ec1lNAG.png
OP posted the imgur webpage as "img" tag.

The sub-pixel hinting is wrong, it might be a dpi (do you have a hidpi setup)  issue or misconfiguration of "masterpdfeditor-free" (which, as the name suggests isn't a viewer)
But that's really all I can say.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Eternex49

Member

Registered: 2022-07-08

Posts: 12

Re: [SOLVED] Blurry pdf rendering in masterpdfeditor-free

Well, I'm not using it as a pdf viewer, but as an editor.
I do have a hi-dpi setup, but I appropriately configured the dpi setting ( even changing it to some craze values doesn't seem to make a real difference).
So, there really isn't a way to troubleshoot this...?

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,129

Re: [SOLVED] Blurry pdf rendering in masterpdfeditor-free

I appropriately configured the dpi setting

Then there can be not problem, right?
…

1. step: how does mpef behave in a non-hidpi environment?

Assuming the answer to that is "fine" (*test* it, otherwise this turns into a wild goose chase):
2. What exactly /is/ you hidpi environment (X11, wayland, how many outputs, what are their physical and logical resolutions, how exactly do set those, randr/environment variables, …)

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Eternex49

Member

Registered: 2022-07-08

Posts: 12

Re: [SOLVED] Blurry pdf rendering in masterpdfeditor-free

The problem was the QT_SCALE_FACTOR environment variable. Apparently, masterpdfeditor scales the content too, whilst other applications scale only the user interface.
Unsetting it solved the issue.