Hi all,

Welcome to the first Opera developer update for 2018. Please read to find some news of this release below.

Import bookmarks added in bookmarks manager

To make Bookmarks manager to be an entry point for all bookmarks actions, we’ve added imported bookmarks as a single folder there together with exported bookmarks, available in the expandable menu. All bookmarks imported from other web browsers will be filed in this folder.

Ad blocker improvements

Since we’ve released our native ad blocking feature, we’re still working to improve it. Last week, we added the anti-Bitcoin mining tool as an included feature with our ad blocker.

With string matching algorithm improvements, our tests have shown up to 13% average performance increase.

Allow all sites to use Flash

Today’s developer update now offers the option to allow Flash to run on all sites without request. By default, Opera requires sites to ask first before allowing sites to run Flash.

If you wish to allow all sites to run Flash without prior request, go to Settings (Preferences on macOS) > Websites > Flash.

Other highlights:

  • Opera for Mac now supports AppleScript, allowing you to create snippets for Alfred or automate your workflow easily.
  • HiDPI improvements
  • Chromium version 64.0.3282.15

The changelog.

Installation links

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  • Ralf Brinkmann

    Happy New Year!
    I’m looking forward to the comments on the new version.

  • Кostadin

    Happy New year! Enable/Disable buttons in Flags not fixed 😉

    • Leonardo Gomes

      To see the ‘Relaunch browser’ banner after a change you need to refresh the page.

      • Кostadin

        Then it is a bug. Prompt was automated before

        • L33t4opera

          Hi Kostadin, I can see the same behavior on Linux. It seems, that switching the flags works, but you need to restart the Opera manually, so it’s a bug for sure.

  • Michael A. Puls II

    The “Allow sites to run Flash” option works. But, in a dirty profile, I had to close Opera and delete the “Preferences” and “Preferenses.bak” files first.

    Edit: The setting also doesn’t seem to stick. I have to set it again after every startup.

    • Michael A. Puls II

      Note though that Flash still won’t work on some sites. Fixing DNA-66343 will help with that. Or, there’s https://www.reddit.com/r/operabrowser/wiki/opera/always_activate_flash to work around it.

    • nanana1

      I also have the same issue that the Flash option does not stick and it reverts back to its recommended setting after another startup.

  • Eugene B.

    Thank you for this Opera Developer update! Those new features are great! 🙂

  • Jacqueline

    How do i download the new version?

  • L33t4opera

    Hi Kornelia, thanks for the new build, and fixes 😉

    New flags:
    – opera:flags#adblocker-full-text-rules (Opera’s flag)
    Switches rules from Chromium format to Easylist format.

    – opera:flags#enable-service-worker-script-full-code-cache
    Generate V8 full code cache of Service Worker scripts while installing.

    – opera:flags#enable-surfaces-for-videos
    Enable compositing onto a Surface instead of a VideoLayer for videos.

    – opera:flags#enable-wheel-scroll-latching
    Wheel scroll latching enforces latching to a single element for the duration of a scroll sequence.

  • Ognjen Peric

    still have to re-login on various sites/forums/webapps (including gmail) everytime I restart opera.

  • Hector MA

    So you’re pretty confident about Flash not being a risk.

    And I guess this is jumping to beta soon.

    • Marko Koivuniemi

      It’s excellent to offer this option.

  • Alexs

    Thank you for this build.
    This is the first build since v51.0.2781.0 without problems (video and corrupt gpu support).
    Debian 64bit

  • Hans Hansen

    The “Show advanced settings” text is missing: https://abload.de/img/advsett4hu2x.png
    Temporary solution is to set the page zoom to 90%.
    Win 10 v1709, 125 % dpi scaling

    Is this the “HiDPI improvement”? 😉

    • andrew84

      confirm on win8.1×64

    • Ralf Brinkmann

      I can see it, I can see it … 🙂
      W10x64 1709
      4k-monitor 150 % scaling

  • SiMcarD

    It would be very useful if you could see the blocked items in Ad blocker.

    • Hans Hansen

      In which way? What do you mean by “see”? Please be more precise! 🙂

      • SiMcarD

        See “a list” of the blocked items. Like others adblock.

        • alexSuper

          ctrl + shift + i (aka information), click the red icon at the right up corner

          • SiMcarD

            Thank you. Nice trick but it’s only a workaround 😉

  • tarkus

    In Settings > Websites > Flash, I don’t see any option about running flash on all sites! The options are still ‘Block Flash’ and ‘Ask first before allowing sites to run Flash (recommended)’ which is the default option – where is the third possibility?
    PS I’m still waiting (and I’ll be reminding it to you in any of my future posts, no matter what it’s about) for the missing mouse gestures (the most significant omission: rolling through tabs)!
    PS 2 The option appeared 5 minutes after using this new version of Opera – it’s a miracle!

    • Hans Hansen

      What OS? Are you sure you are running Build 2830.0?
      You should see this: https://abload.de/img/flash_4cjo6.png

      • tarkus

        Thanks for the response but …. something strange happened! The option appeared 5 minutes AFTER running the new Opera version, so everything is OK (as to how this happened, I have no explanation).

        • Hans Hansen

          Good. Problem solved. 🙂

        • modemjunkie

          Confirms the oldest technique in the world. To fix something, report in broken, then look again. To complete the process, blush and apologize. 🙂

          • tarkus

            Why did you find it necessary to comment? Do you represent some kind of ‘internet jury’? There are so many wrong things in the web that I’m sure I’ll hear from you again!

          • modemjunkie

            I apologize. I didn’t mean to criticize. More to commiserate. It’s just that I have found myself in that position a number of times. After I post a question, suddenly a problem gets fixed or disappears without explanation. I should not have included the last sentence.

          • L33t4opera

            It’s a kind of magic 😉

          • Ralf Brinkmann

            It was a joke and funny and you should understand that.

  • MorPeh


    • Hans Hansen

      This is browser sniffing, the website doesn’t support Opera – so it’s up to the website owner to change this behaviour. If you change the user agent to Chrome (via an extension) this website works as expected in Opera.

    • Hetai-Na

      You can try WebCompat.com

  • Кostadin

    ad-blocking cannot be enabled/disabled per site

    • Hans Hansen

      Can’t confirm, working fine on Win10.

      • Кostadin

        For me it does not work. I can’t move the slider

        • Hans Hansen

          What OS? Does it help when you deactivate the adblocker completely and then activate it again?

          • Кostadin

            Windows 10, 64bit; yes, I did try to disable/enable blocking – same results.
            Update: reset to factory settings resolved the problem

  • Hetai-Na

    Can you add a Video History to Opera? Samsung Internet have it, and I think it would be very useful.

  • Biohazard

    Opera Developer is my default browser :B

  • asdf_x2

    I still get a crash on Linux if i Ctrl+Tab on the far right.

    • L33t4opera

      Hi, go to Settings, make sure the “Show advanced settings” option is enabled. Click “Browser”, scroll down to “System”, and uncheck the checkbox on the left of “Use hardware acceleration when available”, then restart the Opera, and see if this helps in your case.

      • asdf_x2

        No help.

        BUT selecting “Cycle tabs in most recently used order” seems to cure the problem.

        • Oliver

          Thanks for the tip. We could reproduce and fix the bug!

  • skpy

    Latest few versions cannot be installed on Ubuntu 14.04 LTS due dependency error:
    opera-developer depends on libdbus-1-3 (>= 1.9.14), howewer:
    Version libdbus-1-3:amd64 in the system 1.6.18-0ubuntu4.5.

  • Marc

    For a couple of weeks, the tab preview is not working correctly. When I hover over a tab, it tries to display the preview but it’s either all greyed out, or shows the preview of one tab for all tabs. Is this a known bug? Also this bug only occurs at home, it works just fine at my workplace.

    • Ralf Brinkmann

      I thought I’m the only one. Sometimes the preview is empty and a notice appears, that the preview can not be shown now.

    • Leonardo Gomes

      What OS? It seems to be working fine here on Windows 10. Although this page’s preview looks blank if on Disqus part of it.

      • Marc

        I’m on Win10x64 using OperaDevx64 at both my workplace and at home. I’m not doing anything different with Windows and haven’t tinkered with any browser system settings or such things. It’s just not properly working with my installation at home, it’s weird.

  • bratpit

    Linux64 bits

    When starting opera with this option:


    to prevent track /fingerprint/ me by this technique

    Fast switch does not work.
    In vivaldi and chromium no such issue.

    • Let’s Talk

      #1 confirmed on Linux 64 bit. Empty speed dials page and these error messages which perhaps are connected to the same problem:

      [10690:10690:0110/214625.311363:ERROR:CONSOLE(864)] “Uncaught (in promise) SecurityError: Failed to execute ‘getImageData’ on ‘CanvasRenderingContext2D’: The canvas has been tainted by cross-origin data.”, source: chrome://op-resources/bundles/fallback_tile.js (864)
      [10690:10690:0110/214625.522910:ERROR:CONSOLE(864)] “Uncaught (in promise) SecurityError: Failed to execute ‘getImageData’ on ‘CanvasRenderingContext2D’: The canvas has been tainted by cross-origin data.”, source: chrome://op-resources/bundles/fallback_tile.js (864)
      [10690:10690:0110/214625.525646:ERROR:CONSOLE(864)] “Uncaught (in promise) SecurityError: Failed to execute ‘getImageData’ on ‘CanvasRenderingContext2D’: The canvas has been tainted by cross-origin data.”, source: chrome://op-resources/bundles/fallback_tile.js (864)

      Those error messages go away if I start opera-developer without option –disable-reading-from-canvas

  • DaZung

    Since “All bookmarks” were renamed to “Other bookmarks” they are no longer the first item on the list and the bookmarks pane opens with the “Bookmarks bar” selection, witch I do not use and leave empty.

    The name change itself if fine but this means an extra click must be made *every single time* I go to bookmarks. Please make Opera remember the selection!

    Also, the “drop” animation in unbelievably irritating to me. Adds nothing to the utilization but noise!

  • Matheus Bombonato

    Its just a coincidence or the Smart RSS extension is not working with this build? Sadly the developer does not support the extension anymore 🙁
    Is there any other alternative RSS reader?

    • i use feedbro, but i’m on stable, so not sure if it works on developer

  • Mladen Mladenov

    Hi, I really hope you see this:

    Ever since I updated to the latest Stable version (v50) videos on YouTube stutter for a second when starting. It happens both on macOS and Windows. They also stutter after resuming from pause when they’ve been paused for some time. I have only one extension directly relating to YouTube: “h264ify” and I’ve tried it with it disabled – it doesn’t matter: the videos stutter regardless.

    Is this an issue on your radar?

    • Hans Hansen

      I don’t have this problem.
      Win10x64 v1709, Intel Core i5-7300HQ, 16 GB RAM, Intel HD 630 (HWA on)

  • Maulik Lakhani

    Thank you for that”Allow all sites to use Flash” option and making Ad-block faster. Thanks a lot to the Opera Developer Team 🙂

  • Ralf Brinkmann

    Our Developer became Beta

    • Leonardo Gomes

      Now waiting for 52.

  • PakSae

    Speed test on this page shows “It’s 42% faster with ads!”

  • Springer

    Can we get “Sort alphabetically” back in Bookmarks Bar?
    While you are at it, please bring back “+” to add sites/folders to the Bookmarks Bar too.

    That is all. Thank you.

    • Richard Hart


  • Kened Ferreira

    I’m waiting for the 52. I hope it will looks like Opera Neon.

    • Leonardo Gomes

      Looks like Neon on which way?

  • The Neon-like desktop wallpaper option is still not working for me. ¯_(ツ)_/¯

    • Leonardo Gomes

      Isn’t working how? You don’t see your desktop wallpaper amomg the options to select?

  • Rudric

    So last years big newbies were: half done reborn sidebar and reborn snap. Still waiting for other Neon / Reborn implementations..

  • Rudric

    About tab stacking: it’s available as open source. Only needs GUI to be done. Alternatively web panels and split screen features would go a long way..

  • beBoss

    Can anyone tell me where are the “open tabs” gone, because I can’t find them on the sidebar, or any option to activate them, they are just gone. I am using Mac and Windows 10, and love when everything is synchronised like bookmarks, speeddials etc, but with the latest build on Windows 10, I can’t find them. What’s wrong???

    • Leonardo Gomes

      I still can see it here, both on sidebar and tabs menu.

  • Rudric

    Is #important-sites-in-cbd gonna be implemented?

  • Andrey
  • Richard Hart

    1) v50 does not save my logins and passwords despite Autofill being ticked. I read somewhere I had to TYPE IN all the ones I wanted???? Surely not.
    2) Video Pop up option (set to block) not working.

    Hate the new Heart symbol for bookmarks. Miss the straightforward + sign to add to Bookmark toolbar. ….bring back please…