Abstract: Systems and methods for delivering an update for a web application are provided. In some aspects, a request to access a web application is received from a client computing device. A last version of the web application provided to a computing device having an identifier associated with the client computing device is determined based on data stored locally at a server. A delta file is provided to the client computing device in response to the request to access the web application. The delta file includes indicia of a difference between a current version of the web application stored at the server and the last version of the web application provided to the computing device having the identifier associated with the client computing device.

Abstract: A system and method for validating the integrity of a style sheet. A request is received for a style sheet from a web browser. The style sheet is determined based on the request. A marker is placed at an end of the style sheet denoting the end of the style sheet, and the style sheet is sent containing the marker to the web browser. The web browser checks the style sheet for the placed marker.

Abstract: A system and method for rendering and serving a web page. A style sheet is requested and a style sheet in a response is received from a server. A cutpoint associated with the style sheet is identified. The style sheet is split into a plurality of derived style sheets based on the identified cutpoint, and the web page is formatted based on the plurality of derived style sheets.