Opera Mini

Opera Software has developed a mobile browser

Opera Mini, a mobile browser created by Opera SoftwareAS. Although it was originally designed to be used on the Java ME platform as a lower-end sibling of Opera Mobile, it has been redesigned for Android. The device was originally developed for iOS and Windows 10 Mobile. The Android version is currently the only one in active development.

Opera Mini is a derived from Opera’s web browser. Opera Mini uses Opera Software’s compression proxy to request web sites. After requesting web pages, the compression server compresses them before sending them to your mobile phone. As a result, the compression rate is 90 percent and the transfer speed by up to two-to three times. Pre-processing improves compatibility for web pages that are not optimized for mobile devices. Interactive sites that rely on the JavaScript device processing are not compatible.

Opera Software stated that Opera Mini was used by 168.8 Million users in July 2012. [16] Opera Software also reported that there were 300,000,000 Opera Mini users active and that 150 billion pages had been viewed during February 2013. This was 25 million more users than September 2012.

Histories

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Origin

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Opera Mini is a reworking of the Opera browser that was made available for personal computers since 1996. Opera Mini 2.0 was published on 3 May 2006. Opera Mini 2.0 was released on 3 May 2006. [26] A second beta version was released on November 22nd, , and the final Opera Mini 3 release was on November 28th, .

Opera Mini 4

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Opera Mini 4 was launched on 7/11/2007. Johan Schon was the technical leader of Opera Mini 4 development. The Overview mode allows the user to scroll through a zoomed out version of web pages. [29] A built-in pointed lets the user zoom in on a specific section of the page, similar to Opera’s Nintendo-based browsers. Opera Software was replaced by a rel=”/wiki/Yahoo!” on 8 January 2007. Title=”Yahoo! title=”Yahoo! Yahoo! announced a partnership to make Google search the default. On April 10, 2008, a version was released for the Android OS. A wrapper was developed to convert Java ME API calls into Android API calls.

Versions later

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Opera Software’s Opera Mini 5.0 beta was released on 16 August 2009. It included tabbed browsing and a password manager. [37] Opera Mini’s compression and proxy-based encryption technology has the side effect that it can bypass many Internet censorship. Chinese users have reported that Opera Mini redirects them to an error page that directs them to the Opera Mini China edition. The Chinese government is concerned users may use Opera Mini to circumvent the Great Firewall in China. Opera agreed that all traffic would be routed through Chinese government servers.

Opera began accepting registrations on 3 September 2014. [43] Opera Mini was made available for Windows Phone users. [44] Opera Mini marked Opera’s return back to Microsoft’s mobile platform after the death of Windows Mobile.

Functionality

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Opera Mini makes HTML, CSS, and JavaScript smaller by using a server. The server can shrink images so they fit on the phone’s screen. Opera Mini is now very fast thanks to this step.

Opera Mini uses the server-based compression method. This allows for maximum compression, but can cause issues when using interactive Web apps. Opera Mini can operate in three compression modes: “mini” (or “extreme” on Android versions), “turbo” (or “high” on Android versions) and uncompressed.[10][45] The turbo and the mini modes reduce the amount of data transferred, and increase speed on the slower connections.[10]

Mini mode has a slightly different functionality than a standard Web browser. The data that must be transferred is much smaller, however, there are some limitations to the functionality. Opera Mini is a more complex web browser than a standard web browser. The data transfer speed is much lower, but there is still some functionality. [10]

Java ME and Windows Phone only have the ability to use the mini compression mode. [49] Opera Software states that Opera Mini can reduce data transmission by up to 90% when used in extreme mode. In turbo mode it can decrease the number up to 60%. This is similar to Google Chrome’s Reduced Data Mode.

Opera Mini allows users to browse the internet using Opera Mini. The request to get the Internet is transmitted, through the connection available by the device ( Mobile broadband, WiFi or other options given by the device), to one of the Opera Software proxy servers. This retrieves the page and processes it. It then sends it back (user’s phone).

Opera Mini defaults to opening one connection to proxy servers. This connection is kept open by Opera Mini and can be reopened as needed. This speeds up transfer and allows the servers to quickly sync changes to Opera Mini bookmarks.

To handle Opera Mini traffic, the Opera Software business maintains more than 100 proxy servers. These servers run Linux, are extremely parallel and redundant. [53]

Support standard

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Opera Mini now supports the majority of web standards that Opera 12 has. Opera Mini’s extreme compression mode was added to Opera 12.[54] Opera Mini’s extreme compression mode uses an upgraded version of the Presto layout engine that is included in Opera 12. [54] Opera Mini also supports HTML5 input types and CSS Flexbox models. Opera Mini can display both right-to left scripts like Hebrew and Arabic, as well as languages written from the left. It will only display right-to left text if it is set to very small fonts.

The Small Screen Rendering

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The default rendering mode for devices that have screens smaller than 128 pixels is Small-Screen Rendering. The default rendering mode for devices with screens 128 is Small-Screen Rendering (SSR). [55]

Complex script rendering

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Opera Mini allows you to send bitmap images if the font is unavailable on your device. This is helpful for Indic scripts. Hindi and Bengali are also supported.

JavaScript Support

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Opera Mini mode allows you to browse the Web using JavaScript. This is processed from the proxy server and is merely rendered upon the device. This restricts interaction. It is not possible to run scripts in the background of the device. The browser cannot run scripts in the background if they are paused on the server. JavaScript can only be run on Mini servers for two seconds before it is paused. The browser must communicate with the server to unpause the script. Only a few events can trigger scripts once the setInterval or timeout are disabled. Only a few events can trigger scripts once the device is connected to it: [61]

  • Unload: When the user navigates from page [62]
  • submit: When a form has been submitted [62]
  • onChange – Fires when an input control’s value is modified [62]
  • Click: When an element click [62]

The proxy server is then notified that one of the above events has occurred. When one of these events is triggered, it sends a request to the proxy server to process the event. [64]

Opera Mini is able to run in Turbo or Uncompressed mode, as well as Mini mode. Turbo mode transfers a lot more data than Mini mode. However, JavaScript, unlike Mini, is not intercepted and still works correctly.

Security and privacy

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Opera Mini secures your connection to the Opera proxy server. Opera Mini a href=”/wiki/Encryption” title=”Encryption”>encrypts the connection between your mobile device and Opera proxy server for security. Opera Mini Extreme mode doesn’t offer true end to end security. It only supports HTTPS encrypted pages for data savings. Opera Mini’s server doesn’t intercept connections to secured sites using “High/Turbo” mode or “Uncompressed” mode. Opera Mini server doesn’t intercept connections made to secured sites using High/Turbo mode and Uncompressed modes.

These are the features

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Opera Mini makes use of cloud acceleration and data compression technology. Opera Mini serves as a proxy that compresses web page data before it is sent to the users. This helps web pages load faster.

You can toggle between landscape and portrait mode using keystrokes. Smartphones with orientation sensors will automatically switch the display. You can change the default orientation by pressing a key or switching automatically on phones with orientation sensors.

Opera Mini can use several pre-configured search engine addresses from its address bar. An additional search engine can be added by the user. [70] These search engines will default to Google, Wikipedia.

Opera Mini has an ad blocking. Opera Mini’s servers filter advertisements before rendering the page to clients.

Opera Mini is an AI-powered news aggregater that serves personalized news, [73] evening mode, and private surfing. It can also save bookmarks and stream files.

Opera synchronization

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Signing into Opera Account allows you to save bookmarks, speed dials and open tabs. These can be synchronized with Opera on different devices or computers using Opera Sync. And can be accessed through web interface at https://sync.opera.com/web/

Adoption of the market

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In June 2018, the overall market share for Opera in the mobile browser market was around 5.01%. [74]

Data centers

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From 2006 to 2008, the total data used by Opera Mini users around the world in TB

Opera Mini depends on the processing of the Web page by data centers before it is sent back to the telephone in compressed binary format. Opera Software has data centers located in the United States of America, Norway, China Korea, Poland, and Iceland.

Operators of networks

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Many mobile networks have pre-installed Opera Mini for their phones. These include Telenor and AT&T as well as Vodafone, T-Mobile and Omnitel.

Geräte

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These devices were pre-installed as Opera Mini in August 2007. The following devices came pre-installed with Opera Mini as of August 2007.

Although Opera Mini is not supported by Chrome OS yet, Vlad Filippov has published a guide to help you use the Chromium browser. [80]

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