Okular slightly stretches some PDFs. Does anyone else experience this?

Help
1

Example of Unexpected

Using firefox-136.0.1-1.fc41.x86_64 on my CV, I see:

Screenshot_20250315_223046
Screenshot_20250315_2230461280×1400 295 KB

Examples of Expected

…whereas in the undermentioned, I see:

  1. firefox-136.0.1-1.fc41.x86_64

    Screenshot_20250319_162108
    Screenshot_20250319_1621081280×1400 316 KB
    [1]

  2. google-chrome-canary-136.0.7069.0-1.x86_64

    Screenshot_20250319_162105
    Screenshot_20250319_1621051280×1400 312 KB
    [2]

That’s what I expect - not what Okular displays. Does this occur to anyone else’s PDFs? I ask because:

  1. If not, can you provide an example, so that I can test it on my Okular installation?

  2. If so, I’ll file a bug, unless anyone has reason to believe that this is expected.

  1. discourse.mozilla.org/t/141403/31 ↩︎

  2. discourse.mozilla.org/t/141403/42 ↩︎

2

both images show the same width (160px) on my versions for firefox and okular

Screenshot_20250316_052107
Screenshot_20250316_052107589×635 128 KB

i would attach the pdf but the site won’t let me.

1 Like
3

Thanks, @skyfishgoo. Using a digital ruler is a clever idea. They appear to be fairly early in implementation though, probably owing to the XOrg – Wayland switchover. [1] Maybe I’ll wait for the undermentioned before trying to confirm and report this:

  1. linuxquestions.org/questions/programming-9/ideas-for-screen-ruler-on-wayland-4175704648/#post6307645 ↩︎

4

i believe krule works in plasma 6 wayland, tho i’ve not tried it

1 Like
5

@skyfishgoo, yeah, KRuler [1] works on Wayland. [2] Thanks! This has allowed me to rudimentarily confirm - I see exactly 446 px in Firefox [3] and Chrome [4] at 100%, but > 450 px in Okular’s [5] equivalent size of 110%:

Examples

  1. google-chrome-canary-136.0.7073.0-1.x86_64

    Screenshot_20250318_170318
    Screenshot_20250318_1703181280×720 323 KB

  2. firefox-136.0.1-1.fc41.x86_64

    Screenshot_20250318_170340
    Screenshot_20250318_1703401280×680 374 KB

  3. okular-24.12.3-1.fc41.x86_64

    Screenshot_20250318_170420
    Screenshot_20250318_1704201280×680 361 KB

    And, yes, it needs to be at 110% in Okular to render equivalently:

    Screenshot_20250318_173933
    Screenshot_20250318_1739331280×660 249 KB

Firefox’s [3:1] PDFJS implementation is more pixel-perfect, but it still equates to the same amount of pixels for it and Chrome’s, [4:1] despite Okular [5:1] appearing to delegate to Chromium’s PDFJS implementation for this too, considering it:

  1. …suffers from the same, and because:
  2. I presume it utilises QtWebEngine.

How weird. I’ll estimate that this is a bug.

  1. kruler-24.12.3-1.fc41.x86_64 ↩︎

  2. $Env:XDG_SESSION_TYPE='wayland' ↩︎

  3. firefox-136.0.1-1.fc41.x86_64 ↩︎ ↩︎

  4. google-chrome-canary-136.0.7073.0-1.x86_64 ↩︎ ↩︎

  5. okular-24.12.3-1.fc41.x86_64 ↩︎ ↩︎

6

You ate it didn’t you.

1 Like
7

it does look tasty XD