network graphics

This document defines policy for the inclusion of Scalable Vector Graphics (SVG) in the definitive versions of RFCs and relevant publication formats. It contains policy requirements from RFC 7996 but removes all requirements related to using a specific SVG profile or implementation code. It also makes the RFC Production Center (RPC) responsible for decisions about SVG tooling and implementation.

This document obsoletes RFC 7996.

RFB ("remote framebuffer") is a simple protocol for remote access to graphical user interfaces that allows a client to view and control a window system on another computer. Because it works at the framebuffer level, RFB is applicable to all windowing systems and applications. This document describes the protocol used to communicate between an RFB client and RFB server. RFB is the protocol used in VNC. This document is not an Internet Standards Track specification; it is published for informational purposes.

This document describes PNG (Portable Network Graphics), an extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, grayscale, and truecolor images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits.

PNG is designed to work well in online viewing applications, such as the World Wide Web, so it is fully streamable with a progressive display option. PNG is robust, providing both full file integrity checking and simple detection of common transmission errors. Also, PNG can store gamma and chromaticity data for improved color matching on heterogeneous platforms.

This specification defines the Internet Media Type image/png.

This RFC describes the requirements for a graphical format on which to base a graphical on-line communication protocol, and proposes an Interactive Graphical Communication Format using the GKSM session metafile. We hope this contribution will encourage the discussion of multimedia data exchange and the proposal of solutions.