Adobe, Inc.

Leonard D Rosenthol

John P Brinkman

Anatole A Matveief

Vivek K Hebbar

Jie-Wei Li

Dibyajyoti Ghosh

Matthew R B Hardy

Rik Cabanier

The present disclosure is directed toward systems and methods for maintaining semantic information in a document from a web page. For example, one or more embodiments described herein encode unique colors into an HTML DOM associated with a web page prior to passing the HTML DOM through an existing rendering engine. In response to receiving a color-coded graphical objects representative of the HTML DOM, systems and method described herein apply the original semantic attributes of the web page into the graphical objects based on the unique color encoding.

Preserving semantic information in document conversion via color codes

Techniques are disclosed for extraction and modification of Portable Document Format (PDF) file content using Hyper Text Markup Language (HTML) based authoring tools on File Transfer Protocol (FTP) clients. A PDF FTP processor is configured to map components of stored PDF files to a hierarchical directory structure, and to receive FTP commands from a client application which identifies a PDF document and a type of access or operation (e.g., content or attribute modification, content extraction, etc.). The FTP commands also identify components of the PDF document upon which the requested operations are to be performed. The PDF FTP processor is further configured to invoke function calls to a PDF parser library to perform the requested operations. These techniques enable client software to access and manipulate the PDF document in a relatively simple and efficient manner, for example through HTML authoring tools that communicate to the server through FTP commands.

Manipulation of PDF files using HTML authoring tools

Maintaining semantic information in document conversion

Techniques are disclosed for extraction and modification of Portable Document Format (PDF) file content using Hyper Text Transfer Protocol (HTTP) requests. A PDF web server is configured to receive HTTP requests from a client which identify a PDF document and a type of access or operation (e.g., content or attribute modification, content extraction, etc.). The HTTP requests include Uniform Resource Locator (URL) path to identify components of the identified PDF document upon which the requested operations are to be performed. The PDF web server is further configured to invoke function calls to a PDF parser library to perform the requested operations. These techniques eliminate the need for client software to include relatively complex PDF parser libraries, instead allowing the client to access and manipulate the PDF document in a simpler and more efficient manner. In some cases, the PDF web server may be incorporated in a PDF viewer.

Manipulation of PDF file content through HTTP requests

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Huntingdon Valley, PA, United States of America

Leonard D Rosenthol