[okular] [Bug 509815] New: Stamp annotation has low quality (regression)

[Andrea Ippolito]

https://bugs.kde.org/show_bug.cgi?id=509815

            Bug ID: 509815
           Summary: Stamp annotation has low quality (regression)
    Classification: Applications
           Product: okular
      Version First 25.08.1
       Reported In:
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: andrea.ippo at gmail.com
  Target Milestone: ---

I used to "sign" PDFs all the time by just stamping a scan of my signature at
the right place, using Okular.

My signature is saved as a png with transparency (or .ico), and defined as a
custom annotation.

This has worked very well until recently-ish (I think a few months now, but
never found the time to report this).

Now whenever I stamp my signature on a PDF, it results in a low quality image
which anyone could tell is digital.

My current workaround is to use Xournal++, which isn't affected by this.

To reproduce:
- download this John Doe signature (which is definitely high quality):
https://www.clipartkey.com/downpng/wxmohi_signature-image-john-doe/
- open Okular Settings (Ctrl + Shift + ,), go to Annotations
- click on the Add... button
- name it anything you like, select as a type "Stamp" from the dropdown
- in the appearance section, leave opacity at 100%, and click the browse icon
near Stamp symbol to pick the previously downloaded signature image file
- confirm everything and close

Now open any PDF file and insert this annotation.

It should appear in high quality, instead it appears as shown in my attachment

With the same signature image file, open the same PDF file with Xournal++ and
just paste the image into it: it will display perfectly

A few releases ago this would work great and Okular would deliver the same
sharp result that I'm now only getting with Xournal++

-- 
You are receiving this mail because:
You are the assignee for the bug.