It’s the peak of the vacation period, but we still hope you are there to pick up our Opera developer we are releasing today. Well, well… what do we have here?

Power saver redesign

Today’s Opera developer release contains major redesign of the power saver feature, including both the workflow and the user interface. The new version should be more intuitive and easier to use for both the regular users and the power users.
Regular users will get the power saving mode working automatically based on Hints’ selections. Also, they have easy access to the mode using the Battery icon placed in the toolbar.
Power users can manually change how the power saving mode works for them in the Preferences/Settings (including the possibility to disable the mode completely).

New Power Saving

RSS reader updates

We have also fixed a number of things in our RSS reader. In particular:

– The character limit has been lifted, and now you can use very long URLs.
– The button “Remove from My Sources” is available for RSSes.
– The RSS title is shown instead of URL.
– The RSS feed is aligned correctly to the timeline.

Please let us know in the comments whether it works for you now. Any ideas are also welcome!

Other changes

Chromium has been updated to 53.0.2785.8.
For details, please take a look at the changelog.

Known issues

– In the RSS reader, “My sources” are not added from the setup dialog. We’re working on that.
– We have an issue with the Windows x64 release again. Sincere apologies.

Installation links:

Changelog: Full changelog link

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  • nanana1

    Thanks for this Opera 40.0.2301.0 Developer update which redesign the power saver feature for more ease of use in the midst of this vacation period !

    Not quite expected but certainly appreciated. 🙂


    who needs an rss reader in the browser?!

    • kapsi

      I do

    • Alex Wazovskiy

      I am.

  • Leonardo Gomes

    Thanks for the update and for the improvements in RSS reader.

  • Ralf Brinkmann

    This time not the first one… 🙂

  • Marek

    SmartRSS addon works a way better than RSS in the news – I can scan news and remove uninteresting, delete readed or even pin important one. Everything is stored locally and after a while I can read messages from a week ago (if newsfeed was read in the meantime) – I’m not stuck only with newest one.

    • Aneta Reluga

      We’ll take your opinion as the suggestion, thanks.

      • Eugene Tareyev

        Please add keyword filter for rss! It’s a must-have feature! Something similar was done by SPOI Filter extension.

  • how can I enable the RSS reader in the browser? I don’t have an icon in the side menu (screenshot:

    • Leonardo Gomes

      In Start Page settings, uncheck ‘News’.

  • AdKiller

    The Windows x64 link is still pointing to the old 40.0.2296.0 build. Please update it. Thanks.

    • ive

      “Known issues
      – We have an issue with the Windows x64 release again. Sincere apologies.”

      • AdKiller

        Yes, I know. I mean they should remove it if they are not going to post the updated build later.

        • Aneta Reluga

          You are right. Seems we won’t be able to do the update, so I’ll remove the link.

          • Ralf Brinkmann

            Ups, I didn’t realize that. I updated the 64-bit version with the 32-bit one and it works. Funny.

  • Leonardo Gomes

    Any chance of adding the ability to rearrange and/or group the sources in News?

    Sometimes we may add a new source that fits better somewhere in the middle of the list, among with other related ones, instead of in the bottom of it.

    • Aneta Reluga

      I pushed your idea to the respective team and let’s see what happens.

  • Vux777

    3 tabs, close middle one

    I guess it’s the bug in the ratio and tab animation

    • Aneta Reluga

      Yep, sorry. Known issue (but unlisted), it’s a side effect of the DNA-48861 fix. The fix for this too-wide-tab is on its way.

  • Gordon Freeman

    I got a unnassasary scrollbar in Speed Dial: (only with Opera 40)
    Maximum number of columns: 6
    Speed Dials: 16
    Page Zoom 110%
    Search box: yes

  • john smith

    i have a windows 10 pc with a html input, without any other divices. do i understand that if i plug in a chromecast to the html on pc it will work?
    thanks for info

    • Aneta Reluga

      It should (with regard to sending links).

      • john smith

        what about receiving links?

  • Mike

    Address bar still broke with shortcuts 🙁

    eg ctrl+backspace still goes “up a level” for the site rather than deleting a word

  • NoName

    Backspace in addressbar triggers a “previous site”.
    I have manually added that shortcut since it was removed some time ago.

    • Tommy Wille

      That’s the way doing it forward, Chromium’s fault.

      • NoName

        I’m not complaining that the shortcut is gone.
        I’m pointing out the issue, that the shortcut is still triggered when the addressbar has focus.

        That’s new in the last to Dev releases.
        I can see in the comments, that other people has problems with other shortcuts as well.

        • Tommy Wille

          I see. Thanks.

  • Ghirahim

    Dark theme when? W10 anniversary update is around the corner.

    • Wando Schneider

      Dark Mode in the Anniversary update is only for UWP apps.

      • Damian eDameXxX Stępnik

        But I see no problem to implement dark UI like for example Vivaldi does. Who is saying that feature must be operating system depends?

        Vivaldi with dark theme:

        • Wando Schneider

          I don’t. Have you read the post I’ve replied? “W10 anniversary update is around the corner.”

      • Ghirahim

        I know. I just wanted to say that it would be really cool to have a dark theme for Opera too.

        • Dex4Sure

          Indeed it would.

  • Angry Penguin

    Ubuntu 16.04 x64 two issues like in previous developer edition. Thrid time Im posting it xD

    1. Still when I try launch Opera 40 I get info
    about needed password to unlock account passwords… Please disable it
    or fix this issues.

    2. H264 still not working if we use custom chromium browser or simply have
    library from chromium-codecs-ffmpeg-extra in custom dir, or if we
    unpack it in other directory than default

    So please make this like with
    path to flash. Add to file in
    new line with path like this:
    and /usr/lib/chromium-browser/libs and /usr/share/chromium-browser and
    maybe few more like in Flash not only one.
    I asking about this here:

    Can you?

    BTW. Good job Opera Team with developer edition 😀

  • xirit64

    RSS does not work with disqus comments, for example like this:

    • xirit64

      Update: it fetches them (though without the names of the posters which makes it totally useless) but as Leo said above, only if you include a predefined feed from the list along with it.

  • Leonardo Gomes

    A few comments on RSS:

    – If you add only custom (rss) feeds, Opera will not fetch them as well it will show the ‘add a source’ dialog everytime you enter News;

    – Currently there is no way to distinguish between read and unread articles in custom feeds;

    – If you use the grid view mode, the text in it may be messed up;

    – If, for any reason, a rss feed couldn’t be added, then it should show an error message.

  • I ran the updater from since the auto update was not working, and it killed part of the dock and unminimized some docked windows from stable Opera

    OS X 10.11.6

    • Seeing the same thing in a Windows 8.1 machine
      Opera developer 40.0.2288.0 is not downloading the update for this blog post dev update

      The download link is throwing 500 internal errors, and sometime will load the downlaod

    • Kornelia

      Why autoupdate was not working for you? I checked this and it was fine. What error message you got?
      EDIT: seems we’ve got some server issues. Working on it now.

      • NoName

        Autoupdate did not work for my computers either.

        In opera:about I see it downloading up to 100%, and then it says “Failed to download update”.

        Both computers are Windows 10.

        • Aneta Reluga

          Can you please check now? We’ve have some intermittent issues for a while which should be fixed now.

          • NoName

            Works now, thanks!

  • Johnny Seven

    When skipping through a youtube video in this latest build the video just hangs and refuses to continue playing…works fine in Beta.

    Windows 10 v.1511

    • Kornelia

      You mean skipping ad?

      • Johnny Seven

        No I’m referring to scrolling to a different part of the video..beyond any ads.

        Just tested the latest Beta release and this problem doesn’t occur…it’s only surfaced with the latest developer build.

        checked my settings in both Developer & Beta and are identical and running identical extensions.

      • NoName

        I get this as well, but not on all videos.
        One of those who fail for me:

        And no, it’s not ads.
        When you seek in the video, it never starts again.

    • taneli

      Just came in here to post about the same problem, skipping with mouse or keyboard just freezes the video, just shows the “loading” icon.
      Aaand only on some videos.
      Here are a couple of what i found this in:

      Win8.1×64, 32bit Opera.

  • scam

    still the same bug when tab is loading and you try to drag it to the new window. crash

    • Aneta Reluga

      Thanks, it’s DNA-56144 internally.

      • scam

        Thank you for the great browser

  • Vlad Violenty

    please, delete suggestion from news

  • Someone managed to make chromecast work? I tried but nothing to do 🙁

  • fffxiii

    not works (win10 x86)

    To create a shortcut to site
    is enough site icon from the browser
    transfer to the desktop

  • fffxiii
  • Marcos Jacoby

    win64 version still off?

    • Leonardo Gomes

      As the ‘Known Issues’ part of the post says.

      While it’s experimental and restricted to ‘developer’ channel, there will always be a risky of it miss a build or even more.

  • Nekomajin43

    Woud it be possible to associate the adblocker with the abp:subscribe URI scheme? Clicking on a link like this should pop up a confirm window, then add the list to the custom lists of the adblocker.

    I know we can manually add the list in the Settings, but this is just a small step ahead.

  • Wraith

    Something I would like to see with the RSS reader is the ability to mark the news already read and not have all the tiles of all sites hanging around, for example Feedly platform gives you that behavior and is very easy to keep track of new articles and also sync across all devices.

  • Leonardo Gomes

    Another one:

    – It would be nice if we could have a preview of the articles in custom/rss feeds. Sometimes the title can be deceptive.

  • Vilveroz Z

    where can i get the wallpaper used in the screen shot ? cant find in stable / beta version

    • L33t4opera

      Hi, it’s the default theme for Opera developer, and it’s called “Where the air is clear”. You can download it from here, navigate to the Opera’s profile folder (find the path in Opera’s menu > About Opera), and copy the file to the “themes” subfolder (if it does not exist, then create it).

      • Vilveroz Z

        thank you !! 🙂 love the theme

  • reiner1302

    Bing has a nice feature: video preview.
    just search with Bing for youtube,
    on the search result page choose videos from the top.
    if you point the mouse on a video Bing starts a preview.
    This feature works in Chrome and in Microsoft Edge but not in Opera.

    • Leonardo Gomes

      It’s something Bing should fix because it doesn’t work due to Bing doing browser sniffing.
      If you use an extension to change Opera’s user agent, you will see that feature working.

      • reiner1302

        Many thx for your very helpful hint. highly appreciated.

  • Rémy Dubois

    Your function to add a search engine in the list is really handy. But could il be possible to set one of these by default ?

    • Ralf Brinkmann

      Ha ha. That’s what everybody wanted since v.15. 🙂 We won’t get it.

  • postdante

    any news on dark theme? does Opera team even consider it in the nearest future?

  • Ralf Brinkmann

    Can anybody explain to me, why always alternates between 20th and 25th July as last (actual) version?
    Both on the overview page as well as directly in the said folder.

  • L33t4opera

    New build – OPD 40.0.2306.0 😉
    (so far without 64-bit build for Windows)