QtWebEngine

@Victorusik said in About version of QtWebEngine: And what does "debug information files" mean Those are debug files for Qt. You need them if you want to debug into Qt code (to see what happens inside Qt code).

@JKSH Thanks a lot for your answer!!! This question bugged me for days.

Hi, Did you also try with a less recent version of Qt such as 6.8 ?

Does anyone know if the 32bit compilation of QtWebengine requires the 64bit versions of python2 and Node.js?

Additional thing: before start I set environment variable QTWEBENGINE_DISABLE_SANDBOX=1.

Hi and welcome to devnet, They might be using proprietary codecs, in which case you need to build Qt WebEngine with them enabled. See here.

did you able to fix the issue?

Very embarassing but I found out I have to to build in RELEASE mode to have the full GPU acceleration. In practice that means doing cmake -DCMAKE_BUILD_TYPE=Release .. Then run windeployqt again. There should be QWebEngineProcess.exe - if there is QWebEngineProcessd.exe (the d for "debug") that means it is still in debug mode and will be slow.

Thanks for your answer. In my case, I've tested WebEngine Quick Nano Browser example using Qt 6.4.3. It uses QGuiApplication and QtWebEngineQuick::initialize is called before creating the application instance. If I move QtWebEngine::initialize() below QGuiApplication, I not only get the same warnings but also an additional message: QtWebEngineQuick::initialize() called with QCoreApplication object already created and should be called before. This is deprecated and may fail in the future. I like to take care of warnings whenever possible, as they can indicate potential issues. Is there any official explanation for these specific warnings?

Problem solved : it is necessary to change active console code page to utf-8 with chcp 65001 command.

@JonB said in Optimization tips for QT WebEngine and/or Chromium?: Is there any solution for the performance problem in debug? As I see, it works smooth in release, but in debug the performance is very poor. I am using Qt6.5.2 and using QWebEngineView in my cpp application to run a parallel web gui alternative of our current desktop solution. win10 enterprise 19045 i7-10850h turbo 32gb ram

This is Similar Issue like mine just refer this. https://bugreports.qt.io/browse/QTBUG-134278

Solved this issue by Disabling the sandbox . Added this in main.cpp: // Disable the sandbox before initializing QtWebEngine qputenv("QTWEBENGINE_DISABLE_SANDBOX", "1"); Disabling the sandbox allows the content to display successfully.

@MonkeyBusiness If you use normal resources (not external resources) then there is no need for this because the resources will be part of the executable file. You also did not answer any of the latest questions...

I will try that. Thank you.