Try Mozilla’s Janus project right now! Speed up browsing, save bandwidth, and more

27 responses

  1. bartoj
    August 6, 2014

    Hi Martin,
    Any idea yet regarding compressive capacity as compared to opera turbo?

    • Martin Brinkmann
      August 6, 2014

      I cannot say as it is difficult to test as Opera does not seem to display information about savings when you enable Turbo in the browser. Mozilla may use its own image compression algorithm it revealed recently which appears to improve compression by about 5% for jpeg images.

      And if they launch the gif to video conversion option, it gets even better.

      • Adam
        August 7, 2014

        Opera doesn’t display information about savings? Open Opera for iOS/Android, turn on Turbo/Off-road mode and you will see the stats. You can compare them with Chrome and Firefox.

  2. Alex
    August 6, 2014

    I didn’t like the use of this kind of services in Opera or Chrome because you let this companies to see everything you are browsing. Do Firefox improve this privacy leak in any way?

    • anon
      August 7, 2014

      Impossible to know since the compression happen serverside. i.e. it’s as safe as other method, aka not very safe at all.

  3. Alex
    August 6, 2014

    I didn’t like to use this kind of services in Opera or Chrome because you let this companies to see everything you are browsing. Do Firefox improve this privacy leak anyway?

    • Martin Brinkmann
      August 6, 2014

      Well if you use a proxy your traffic goes through it. While I trust Mozilla more with my data than Google, there is still nothing you can do about that,

      • Alex
        August 6, 2014

        Oks. I trust Mozilla more too so maybe I’ll try it on my mobile.

    • Gian-Carlo Pascutto
      August 6, 2014

      Yes: the proxy itself is publicly available and open source software, so you can set up your own. No need to send everything to Mozilla.

      • ash
        August 8, 2014

        Thank you, Gian-Carlo !

        I’m quite pleased (relieved) to hear “can set up your own”. From reading the article, it felt like “here we go, another wannabe play at developing yet another captive portal”.

  4. Nebulus
    August 6, 2014

    This kind of application is useful in the mobile world, but I’m not sure why would I trade my privacy for… well, nothing…

  5. Ted Mielczarek
    August 6, 2014

    “Mozilla has been working on project Janus for some time without revealing much about it to the public”” … and then you promptly quote the public wiki page.

    • Martin Brinkmann
      August 6, 2014

      Well what I meant by that is that the “public” does not really read Wiki pages over at Mozilla usually. I think that the release of the add-on is the first step in making it public knowledge.

  6. vux777
    August 6, 2014

    This tech from Mozzilla is far behind Opera Turbo or Google compression proxies (at this stage).
    I’m on mobile net, and like/use those compression technologies all the time…

    Opera turbo 50 KB WebP

    Chrome with extension 45 KB WebP

    FF 34 with Janus 264 KB PNG (no compression at all) this is my experience so far on almost every site…even tho FF is reporting gain in compression about 38%… I seriously doubt it

    Opera have the best compatibility/algorithms for majorities of sites/video streams/downloading files etc…
    again, from my experience

    “Mozilla notes that compression should not have an impact on the visual quality of the image”
    In another words, we won’t use img compression on the fly… because that is too hard :)

  7. exrelayman
    August 6, 2014

    Sharing my experience that it may inform/help others. Read this post. Installed Aurora (FF32) version. The Janus extension cannot be installed to the Aurora version. Installed the nightly build. Did not see any speed increase loading pages. Did see the spinning (loading page) wheel keep spinning forever. Tried a search with startpage. That won’t work. Also upon installing the nightly build, my default browser in Sandboxie was kicked off of Firefox and on to Internet Explorer. Gave up on the nightly build and Janus. Restored to a 2 day old system image rather than wrestle with Sandboxie settings to restore Firefox as default browser.

    But went back to Aurora. I don’t know why, but the 3 to 5 second delay I have been experiencing forever in Windows 8.1 when getting the right click menu does not occur when using the Aurora build of Firefox. Using Aurora gives me this with none of the problems mentioned above using the nightly build and Janus extension. I have no idea why Firefox affects the right click of File Explorer.

  8. Daniel
    August 6, 2014

    No noticeable improvements here.
    In fact, Palemoon is still faster!

    Chrome and Opera were faster as well.

    Windows 7 64bit

  9. lainiwaku
    August 6, 2014

    i wonder if it can help me against with the latency from

    i have good computer, but when i stay long time on facebook or scrol down a lot ,
    make firefox lag a lot on facebook

    EDIT : oh well , i can’t use airdroid with it … so i will simply remove this addon

  10. PMQ
    August 6, 2014

    The addon is not available for Firefox 31 :(

    • jonas
      August 10, 2014

      try to update your FF to 32 beta, it will work

  11. nice
    August 6, 2014

    nice I can now use my own ad-blocking PAC on firefox mobile :-)

  12. Doc
    August 6, 2014

    Aren’t most webservers already using gzip / deflate / mod_gzip / mod_deflate? Thus, HTML, CSS, and Javascript will not benefit from compression, only images, which will be (not noticeably) degraded, and only if the recompressed images are already cached.

  13. Jerzy
    August 7, 2014

    Google Chrome for desktop has a similar extension called Data Compression Proxy for a while.

  14. Alexandre
    August 8, 2014

    Yandex Browser comes with Opera Turbo too. For me Yandex Browser is The Best Browser already seen.

    • vux777
      August 8, 2014

      turbo mode in Yandex is buggy like hell. Most of the time does’t work at all, and if it does, compression gain is much smaller than Operas. Try to test it with 20 most popular pages by your choice compared with same pages in Opera or Chrome (with compression proxy extension). Difference is not only in data transfer but speed too.

  15. John
    August 8, 2014

    Does this encrypt your data in transit so you can’t be sniffed on public WiFi networks?

    August 9, 2014

    On my Android with Firefox v32 (Beta vom GPS) I can’t install that addon says not compatible, after some hacks it works (source it open and you can change some values that it works with lower Firefox versions).

    On my desktop (34.x nightly) it works but my problem is that if I enable that addon I can’t connect on any site, I don’t know why, I’m using a large hosts file, maybe there is something blocked which that addons need (but according to the source there are no checks). Here is the hosts file

    Sad, would like to test it a bit more, but unless it not connect to any site for me I can’t give a full detailed report.

    It does not prevent you from wifi wardriving. Read this:

  17. David
    March 23, 2015

    What are the Janus proxy settings? I’d like to use it via FoxyProxy.

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