A browser speed test is a computer benchmark that scores the performance of a web browser, by measuring the browser's efficiency in completing a predefined list of tasks. In general the testing software is available online, located on a website, where different algorithms are loaded and performed in the browser client. Typical test tasks are rendering and animation, DOM transformations, string operations, mathematical calculations, sorting algorithms, graphic performance tests and memory instructions. Browser speed tests have been used during browser wars to prove superiority of specific web browsers. The popular Acid3 test is no particular speed test but checks browser conformity to web standards (though it checks whether a general performance goal is met).
Speedometer was originally developed by the WebKit team at Apple and released in 2014 and was updated in 2018. Speedometer 2.0 tests a browser's Web app responsiveness by timing simulated user interactions.
Peacekeeper is a platform-independent benchmark by Futuremark that tests rendering, mathematical and memory operations. It takes approx. 5 minutes for execution and tells the results of other browsers with different CPUs. Futuremark stopped maintaining Peacekeeper in July 2015. The test was taken offline in March 2018 and is no longer available.
A Mozilla test suite based on SunSpider tests. It takes several minutes for execution and displays very detailed information about every single test task.
Version 0.9.1 was released in April 2010.
Version 1.0 was released in April 2013.
As of April 12 2017, Google no longer maintains Octane.
This tests vector, bitmap, and text rendering for both Adobe Flash and HTML5.