I tested various "Translators" extensions in the Opera browser. Without success. The translation does not work (Nothing happens, or the translation is inactive!)

1. No, unfortunately it has a limited variety of languages that it translates, mine is not in it.

2. Yes, it needs a lot of work, to reach up to today's standards.

3. When there is a need to translate selected parts of a text, it is not a big deal, everybody has his own methods and does what works for him.
   What would you personally do when you would've come up with this webpage for example? Ameblo.jp. Copy-paste it all the way? And how would you translate the menus, the icons and such?

On any other browser, we just press an icon and the whole page turns in to our preferred language. Just translate the page that I posted, with Chromes integrated icon button, and you will see my point.

4. As I am trying to prove, it is not a stubbornness issue, it is a matter of productivity and most of all security.

We use our browser to do money transactions with foreigners, exchange personal data with them and so much more actions that need multilingual capabilities.

I cannot have a third party app, translating those transactions.

What I need, is a Browser that has a Built-in/Trusted Translator, that is handled/updated by the development team of that browser, so no potential security threats arise.

I cannot and do not want to anymore, to have to open Chrome every time I have to do those jobs. I want to delete it of my system.

That's all.

1. Did you try DeepL for accuracy?
2. Russian Yandex is poor for Ru -> En translations, too.
3. D'you (plural) really need translate whole pages with all the adds and other litters? You may translate selected parts only after all.
4. What I have written was an example of thinking to try to find out sort of solutions of your (plural) issues. Why people are so stubborn to always use that method and not others? Narrow mindedness syndrome (it concerns attitude, not someone's IQ)?

I too, would never choose Yandex but for another reason, because I tried it and in my language(Greek), in the best way I can put it, the translation results are at best, below average.

Opera unfortunately, is the only one, out of the browsers that are considered Top Users' Choice, that does not have an embedded translator, nor gives a good alternative through an extension-app.....

The extensions that I tried, that exist for Opera (including the Chrome ones), that their usage doesn't involve the copy-paste "facade", and do integrated Web Page Translation, face restrictions. For example, you cannot do a translation in the "Opera Addons" page with those apps.

I don't know, lets hope something will change for Opera in the future, because, this is a very useful tool and for Opera that is considered, in my personal perception, a choice amongst multilingual, non native English Speaking Popula, it is a downer, it does not include one...

Screenshots ► Yandex Disk's Opera Forum folder: https://yadi.sk/d/Z1PfltaInOR53w?w=1
Illustrations for this post have been placed in reply.convenient.translations.in.opera subfolder.

Introduction ► Yandex Translator needs to use Custom site panels in Sidebar

Opera browser offers powerfull features to use it (semi)professionally. From my points of view too many users underestimate and poorly understand this browser's possibilities with which Opera had been empowerd from the time the Workspaces, the Sidebar and The Custom site panels were implemented.

(1) you may use Opera's two window layout emulating Vivaldi tiles.

(2) you may use Opera Workspaces in all Opera windows - the identical icons in the two windows can hide different tabs!

(3) you may use Opera Sidebar together with Custom site panels as a launcher for applications or websites.

Explanation(s) ► How to translate whole pages in Opera

• Go to Yandex Translate English website: https://translate.yandex.com

• Check what that service offers: text, site, document, image

• Activate Custom site panels (CSP) in Sidebar: via chrome://flags/#sidebar-site-panel

• Enter Yandex Translate into one of the five CSP options

• close Sidebar settings, open Yandex Translate and change option TEXT to SITE

• set CSP width to your liking or to the width of your monitor (or Opera window size)

• pay attention to the type of work - □ (one tab visible), || (two windows vertically), == (two windows horizontally), both sliders are synchronized!

• pin your app window or not, keep it open any time (pinned and opened) or show/hide if you need screen space

• read the desriptions to the corresponding screenshots for full understanding of this micro guide.

Warning ►
Pay attention to use .com https://translate.yandex.com
not .ru https://translate.yandex.ru.

The first Yandex is in English, the second one in Russian. I have overlooked the trifle detail so first part of my screenshots show YT in Russian.

One Opera window example

[Fig. 01] (rctio_01.png.png) Opera Stable two window layout. Left window had been resized to full screen. Then I opened Yandex Translator with SITE option and did pin the window - thus parting Opera window into two tiles. YT works here in one window options.

[Fig. 02] (rctio_02.png.png) The same translation and layout, but with two vertical windows option.

[Fig. 03] (rctio_03.png.png) The same translation and layout, but with two horizontal windows option.

[Fig. 04] (rctio_04.png.png) Two vertical windows option, but unpinned.

Two Opera windows example

[Fig. 05] (rctio_05.png.png) The left window of Opera browser keeps Yandex Translator in SITE option. The right one can display original website or whatever you want.

Have nice translations!

On the other hand since Opera is a Chromium-based browser, same as Chrome, you can try to install a Chrome app. It is usually a successful process. I don't know how Opera GX works though and if you can do this there. You can try it, if you want.

First you have to install to Opera this extension.

From a quick search I found 3 apps that do instant Web Page Translation.
Those are 1 and 2 and 3. The 3rd option does translate the page, but it opens a new tab for it. I tried to tweak it on the settings for a little bit, couldn't get it to work within the same tab, maybe you can. Out of the 3, the best translation results were from the 3rd app.

Feel free to also search by yourself here.

Be advised, it would be good not to use the translators on sensitive data pages. Good luck and tell me how it went.

As much as I tried, I could not understand how it works though. Nevertheless, this at least indicates that, it could be possible for Opera to integrate a text translation within a page, in its stable version.

I also found an addon, that does the same job that hawk22 asked for.
It is called "Google Translate"( I know, don't hate)
(https://addons.opera.com/en/extensions/details/google-translate/)
It has a highly customizable options menu and if you go to its "advanced options" and you assign "Webpage Translation" on the "Toolbar Button", whenever you press the extensions icon, in the extensions menu on the upper right corner of Opera, it will translate the page. It doesn't seem so stable though.

When you go to a page with a foreign language, an icon comes out near the "Add to bookmarks" icon and asks you if you want to translate the page

And it translates the whole text without changing the pages integrity . And i think this is a great feature.

[Fig. 1.] Opera Neon

Of course, you can stick to the one window solution using Custom site panels. Bare in mind - anything you open from Sidebar can be pinned, what creates sorta two window nice layout.

[Fig. 2] Pinned Player

Now, time for translation issue.
There exists two excellent translators working from Sidebar:

• Yandex Translate
  and
• DeepL Translator

The DeepL can be better than Yandex Translator, but both are based on AI. Yandex T. has one disadvantage - I had to correct translations from Russian to English. Well, Russian is specific.

[Fig. 3] Pinned Yandex Translator

[Fig. 4] Pinned DeepL Translator

Do not ask me about G**gle. I do not wanna share expletives.

Another method is by heading to Chrome web store on Opera and get this - Install Chrome Extensions

After that, search for Google translate on chrome web store and install it. (It should say Add to Opera)

Note: the extension will be disabled at first because it is not an original opera extensions, but u can enable it in "manage extension" list.

This method works well for me.

For in-page translation there is the following workaround:

• Install the Google Translate extension.
• When you're on any page in Opera, hit CTRL-ALT-P or right click and select Google Translate>Translate page to [language].

Your page will be translated, not as intuitive as Google Chrome's in-page auto translation, but just remember the keyboard shortcut or right click and you get close to the same result.

There have been recent RAM issues with Chrome (5GBs of ram for 20 tabs?!) I also tried Firefox, which seemed to solve the RAM issue, but it did use a lot of CPU resources, which I didn't feel was normal, Opera however doesn't seem to have either of these issues.

I can have Opera running with 30+ tabs without experiencing RAM or CPU issues - This is why i like Opera over any other browser - on Windows 10...