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Web Kit is a layout engine software component for rendering web pages in web browsers. Web Kit is also the basis for the experimental browser included with the Amazon Kindle e-book reader, and for the default browser in Apple i OS, Black Berry Browser in OS 6 and above, and Tizen mobile operating systems.

This abstraction is intended to make reuse a more straightforward process for Web Kit2 than for Web Kit.Web Kit's HTML and Java Script code was originally a fork of the KHTML and KJS libraries from KDE, with the exception of the Web Core and Java Script Core components, which are available under the GNU Lesser General Public License. that KHTML and KJS allowed easier development than other available technologies by virtue of being small (fewer than 140,000 lines of code), cleanly designed and standards-compliant.As of March 7, 2013, Web Kit is a trademark of Apple, registered with the U. KHTML and KJS were ported to OS X with the help of an adapter library and renamed Web Core and Java Script Core.Chrome's developers decided on the fork to allow greater freedom in implementing Web Core's features in the browser without causing conflicts upstream, and to allow simplifying its codebase by removing code for Web Core components unused by Chrome.In relation to Opera Software's announcement earlier in the year that it would switch to Web Kit by means of the Chromium codebase, it was confirmed that the Opera web browser would also switch to Blink.