[macos+linux] tiny image previews

[fenbyte]

Bug Description
image previews on macos (and supposedly linux) are unreasonably tiny

Steps to reproduce:

System

• Czkawka/Krokiet version: Czkawka gtk version: 10.0.0, release mode, rust 1.86.0 (2025-03-31), os Mac OS 26.0.0 (aarch64 64-bit), 8 cpu/threads, features(2): [heif, libavif], app cpu version: Baseline, os cpu version: Baseline
• OS version: macOS 26 Tahoe arm64
• Installation method: nightly with heif+avif

[rv-arteaga]

The same error occurs in Arch Linux. Regards.

[Soblow]

Same issue here (Linux)

• Czkawka gtk version: 10.0.0, release mode, rust 1.85.0 (2025-02-17), os Arch Linux Rolling Release (x86_64 64-bit), 16 cpu/threads, features(2): [heif, libraw], app cpu version: x86-64-v1 (SSE2), os cpu version: x86-64-v4 (AVX-512)
• Arch Linux (rolling release) Linux 6.16.8-arch3-1
• Installation method: Arch Linux AUR (also tested the standalone binary and a manual build from sources, same issue)
• System GTK version: 4.20.1-1

The Appimage of 9.0 works as intended and doesn't have this issue.
Noting the fact that I used 10.0 for some time before this issue appeared, so it most likely comes from a dependency that updated and broke something

Only one error is logged in the console, but was already here before:

(com.github.qarmin.czkawka:171924): Gtk-CRITICAL **: 16:17:22.066: gtk_css_node_insert_after: assertion 'previous_sibling == NULL || previous_sibling->parent == parent' failed

[Emporea]

same issue here

my guess is #1590

[Soblow]

my guess is #1590

Reverting commit 5dc9257 doesn't fix the issue on my end (recompiled from sources)

[Emporea]

I didnt even test it before guessing, but you are right. it didnt change it.

[Zu-i]

Same issue, linux

• Czkawka gtk version: 10.0.0, release mode, rust 1.85.0 (2025-02-17), os Arch Linux Rolling Release (x86_64 64-bit), 12 cpu/threads, features(2): [heif, libraw], app cpu version: x86-64-v1 (SSE2), os cpu version: x86-64-v4 (AVX-512)
• OS: Arch Linux
• Installation method: aur/czkawka-gui-bin (10.0.0-1)

Errors observed opening a preview:

(com.github.qarmin.czkawka:164215): Gdk-WARNING **: 21:17:53.095: vkAcquireNextImageKHR(): A swapchain no longer matches the surface properties exactly, but can still be used to present to the surface successfully. (VK_SUBOPTIMAL_KHR) (1000001003)

(com.github.qarmin.czkawka:164215): Gtk-CRITICAL **: 21:17:56.851: gtk_css_node_insert_after: assertion 'previous_sibling == NULL || previous_sibling->parent == parent' failed

(com.github.qarmin.czkawka:164215): Gdk-WARNING **: 21:17:56.982: vkAcquireNextImageKHR(): A swapchain no longer matches the surface properties exactly, but can still be used to present to the surface successfully. (VK_SUBOPTIMAL_KHR) (1000001003)

[Zu-i]

Seems to be related to the value of image_preview_duplicates having a pixel-size of -1, changing this will temporarily restore image size, I don't have knowledge or experience where one would actually find the issue but just thought I'd mention

[ffchung]

Seems to be related to the value of image_preview_duplicates having a pixel-size of -1, changing this will temporarily restore image size, I don't have knowledge or experience where one would actually find the issue but just thought I'd mention

Hi there, any workaround? Thanks

[Zu-i]

Hi there, any workaround? Thanks

I "dealt" with it by inspecting the image element (ctrl-shift-i, then selecting the imagegtk element) and changing pixel-size to something closer to 800, it's not by any means a solution but it'll let that interface temporarily be non-minimized

[ffchung]

Hi there, any workaround? Thanks

I "dealt" with it by inspecting the image element (ctrl-shift-i, then selecting the imagegtk element) and changing pixel-size to something closer to 800, it's not by any means a solution but it'll let that interface temporarily be non-minimized

Base on your suggestion, I modify follow file and add : <property name="pixel-size">800</property>

czkawka_gui/ui/main_window.ui
czkawka_gui/ui/compare_images.ui

[Soblow]

Hi there, any workaround? Thanks

If you don't specifically need features from 10.0, the 9.0 build works perfectly fine.

[azeman]

Same issue here.

• Identical issue across three different versions (6.1.0, 8.0.0, 10.0.0)
• Using macOS Tahoe 26.0.1
• This glitch did not occur before macOS 26 (this may be the sh!ttiest OS version ever released since Windows Vista)

Hi there, any workaround? Thanks

I "dealt" with it by inspecting the image element (ctrl-shift-i, then selecting the imagegtk element) and changing pixel-size to something closer to 800, it's not by any means a solution but it'll let that interface temporarily be non-minimized

This works on my side as well.

[Tamalero]

800

Can this property be set as percentage?