QWebEngineView - problem with loading big files

Kulisek

Hi,
i am trying to solve problem, with loading big HTML files via QWebEngineView.
HTML contains tables with data, and its larger than 1MB, pure HTML.

My code:

page= new QWebEnginePage( ui->webEngineView);
ui->webEngineView->setPage( page);

QFile f(fileName);
  if ( f.open(QIODevice::ReadOnly)) {
            
    QByteArray b = f.readAll(); // all read, data are present
    QString s = a;  // conversion to string is OK
    page->setHtml( s); // HTML is shown correctly, when data are about 750kB, when tried to load 1.5MB, or bigger files, it failed without any error
}

I used this with legacy QWebView, and it worked, it was slow, but worked. Any guess, how to solve it?

Thanks, Martin

RimasM

setHtml(s) isn't suitable for big pages, because it converts passed data into Url of data: scheme, so easily can reach Url length limit. Why not use load(url) function to display such a file? For example:

page->load(QUrl::fromLocalFile(fileName));