Just a quick update. On Opera GX this feature is already implemented, why is it not on normal Opera?

Try installing the ms fonts first
sudo apt-get install ttf-mscorefonts-installer

@iamrishishah said in [Mini]Find text "in page" and "in History" is missing:

There should have an option in the browser where user can search the text in the web page and in the history tab.

Find in page is in the 3 dot menu at the top right corner of Opera Mini's header. Find in history isn't available, unfortunately.

Another thread on this https://forums.opera.com/topic/35269/web-apps-support-for-desktop-browser-too.