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Ajax Opera 9 vs. 10

Opera Software developed the Opera 9 and 10 versions of its Web browser to be compatible with the latest programming standards, including Asynchronous JavaScript and XML, or AJAX. Opera 9 and 10 both allow computer users to complete common online tasks, such as surfing the Internet and using Web-based email. The two Web browsers have several differences. In comparison to Opera 9, Opera 10 has more powerful engines and offers superior performance as well as additional features.

  1. Background

    • The Opera Web browser, which is free for personal computer users to download, has its roots in a telecommunications project that the Norwegian company Telenor began in 1994. In 1995, Opera Software branched out from Telenor and released the first public version of Opera in April of that same year. Eleven years later, on June 20, 2006, Opera Software released the ninth series of its Web browser, to which the company gave the project name "Merlin." On September 1, 2009, the company released Opera 10, using the project name "Peregrine."

    Engines

    • For rendering or processing on-screen imagery and applications, the Opera 9 Web browser relies on the Opera Presto 2.0 rendering engine. In comparison, Opera 10 uses the Opera Presto 2.2 rendering engine. As the consumer electronics and software resource website TopTenReviews notes, Opera 10's updated rendering engine increases the Web browser's security, performance and speed. For interpreting and executing the JavaScript computer programming language, Opera 9 relies on a Linear B JavaScript engine. In comparison, Opera 10 uses a Futhark JavaScript engine. This engine helps to minimize a Web browser's memory usage and code footprint, boosting speed and performance, according to the online technology publication The Register.

    Acid3 Test

    • Unlike Opera 9, the Opera 10 Web browser passes the Acid3 test with a perfect score of 100 out of 100. The Acid3 test is an online test from the Web Standards Project that evaluates the performance of a Web browser. The test takes several Web-browsing aspects into account, including visual rendering, compatibility with fonts and ability to read and execute programming languages.

    Features

    • Opera 10 provides several productivity-enhancing features that Opera 9 lacks, including an integrated crashlogging tool, HTML authoring in Opera Mail, pretty-printing of unstyled XML, Web-font support and frames-per-second (FPS) in Scalable Vector Graphics (SVG) support. Some of the most notable features that Opera 10 introduces are inline spell-check, which alerts users to misspelled words when they are writing in websites like Twitter and Facebook, and auto update, which automatically downloads new software updates to Opera. Another notable feature lacking from Opera 9 is Cascading Style Sheets (CSS) support for Red Green Blue Alpha (RGBA) colors with transparency. This feature allows Web designers to more easily make Web page features transparent.

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