Method and system of web-based document service

A method of providing web-based document, comprising:

• retrieving visual appearance of a document;
• saving the retrieved visual appearance into universal data and storing the universal data of the document in a server;
• wherein, the universal data records post-typesetting information of the document with no re-typesetting of any part of the universal data needed for presenting the document;
• converting by the server, when the document is requested through a web browser of a client, the stored universal data into a format which can be rendered by the web browser of the client, wherein the converted data of the document records post-typesetting information of the document with no re-typesetting of any part of the universal data needed for presenting the document;
• sending, by the server, a web page containing converted data to the web browser of the client;
• wherein, the web page containing converted data would be displayed by the client through its web browser;
• the method further comprising:
• converting the universal data of the document to the format supported by an editing tool;
• receiving the converted document edited by the editing tool;
• converting the edited document to universal data;
• storing the universal data of the edited document in the server.