Bad memory usage on QWebView I think

[wysota]

why you say I must delete pages and webview object ?

As far as I remember it is you who said you are deleting them:

My original application delete QWebView (inside QWidgetTab) and the memory problem is the same.

if I want to reuse the same object for many pages.

You are reusing the webview object but not the webpage object. The page will probably get deleted once you delete the view but as you reuse the view, it's probably not getting deleted waiting until its parent is. You can call QWebView::back() and the previous page will get shown so it's probably not deleted because of that exact behaviour. If you want to get rid of it, then do it manually by calling delete (or deleteLater()) on the webpage object.