## noVNC: HTML5 VNC Client

[![Build Status](https://travis-ci.org/kanaka/noVNC.svg?branch=master)](https://travis-ci.org/kanaka/noVNC)

### Description

noVNC is a HTML5 VNC client that runs well in any modern browser
including mobile browsers (iPhone/iPad and Android).

Many companies/projects have integrated noVNC including [Ganeti Web
Manager](http://code.osuosl.org/projects/ganeti-webmgr),
[OpenStack](http://www.openstack.org),
[OpenNebula](http://opennebula.org/), and
[LibVNCServer](http://libvncserver.sourceforge.net). See [the Projects
and Companies wiki
page](https://github.com/kanaka/noVNC/wiki/ProjectsCompanies-using-noVNC)
for a more complete list with additional info and links.

### News/help/contact

Notable commits, announcements and news are posted to
<a href="http://www.twitter.com/noVNC">@noVNC</a>

If you are a noVNC developer/integrator/user (or want to be) please
join the <a
href="https://groups.google.com/forum/?fromgroups#!forum/novnc">noVNC
discussion group</a>

Bugs and feature requests can be submitted via [github
issues](https://github.com/kanaka/noVNC/issues). If you are looking
for a place to start contributing to noVNC, a good place to start
would be the issues that are marked as
["patchwelcome"](https://github.com/kanaka/noVNC/issues?labels=patchwelcome).

If you want to show appreciation for noVNC you could donate to a great
non-profits such as: [Compassion
International](http://www.compassion.com/), [SIL](http://www.sil.org),
[Habitat for Humanity](http://www.habitat.org), [Electronic Frontier
Foundation](https://www.eff.org/), [Against Malaria
Foundation](http://www.againstmalaria.com/), [Nothing But
Nets](http://www.nothingbutnets.net/), etc. Please tweet <a
href="http://www.twitter.com/noVNC">@noVNC</a> if you do.


### Features

* Supports all modern browsers including mobile (iOS, Android)
* Supported VNC encodings: raw, copyrect, rre, hextile, tight, tightPNG
* WebSocket SSL/TLS encryption (i.e. "wss://") support
* 24-bit true color and 8 bit colour mapped
* Supports desktop resize notification/pseudo-encoding
* Local or remote cursor
* Clipboard copy/paste
* Clipping or scolling modes for large remote screens
* Easy site integration and theming (3 example themes included)
* Licensed under the [MPL 2.0](http://www.mozilla.org/MPL/2.0/)

### Screenshots

Running in Chrome before and after connecting:

<img src="http://kanaka.github.com/noVNC/img/noVNC-5.png" width=400>&nbsp;<img src="http://kanaka.github.com/noVNC/img/noVNC-7.jpg" width=400>

See more screenshots <a href="http://kanaka.github.com/noVNC/screenshots.html">here</a>.


### Browser Requirements

* HTML5 Canvas (with createImageData): Chrome, Firefox 3.6+, iOS
  Safari, Opera 11+, Internet Explorer 9+, etc.

* HTML5 WebSockets: For browsers that do not have builtin
  WebSockets support, the project includes
  <a href="http://github.com/gimite/web-socket-js">web-socket-js</a>,
  a WebSockets emulator using Adobe Flash. iOS 4.2+ has built-in
  WebSocket support.

* Fast Javascript Engine: this is not strictly a requirement, but
  without a fast Javascript engine, noVNC might be painfully slow.

* See the more detailed [browser compatibility wiki page](https://github.com/kanaka/noVNC/wiki/Browser-support).


### Server Requirements

Unless you are using a VNC server with support for WebSockets
connections (such as
[x11vnc/libvncserver](http://libvncserver.sourceforge.net/),
[QEMU](http://www.qemu.org/), or
[PocketVNC](http://www.pocketvnc.com/blog/?page_id=866)), you need to
use a WebSockets to TCP socket proxy. There is a python proxy included
('websockify').


### Quick Start

* Use the launch script to start a mini-webserver and the WebSockets
  proxy (websockify). The `--vnc` option is used to specify the location of
  a running VNC server:

    `./utils/launch.sh --vnc localhost:5901`

* Point your browser to the cut-and-paste URL that is output by the
  launch script. Enter a password if the VNC server has one
  configured. Hit the Connect button and enjoy!


### Other Pages

* [Encrypted Connections](https://github.com/kanaka/websockify/wiki/Encrypted-Connections). How to setup websockify so that you can use encrypted connections from noVNC.

* [Advanced Usage](https://github.com/kanaka/noVNC/wiki/Advanced-usage). Starting a VNC server, advanced websockify usage, etc.

* [Integrating noVNC](https://github.com/kanaka/noVNC/wiki/Integration) into existing projects.

* [Troubleshooting noVNC](https://github.com/kanaka/noVNC/wiki/Troubleshooting) problems.


### Authors/Contributors

* Core team:
    * [Joel Martin](https://github.com/kanaka)
    * [Samuel Mannehed](https://github.com/samhed) (Cendio)
    * [Peter Åstrand](https://github.com/astrand) (Cendio)
    * [Solly Ross](https://github.com/DirectXMan12) (Red Hat / OpenStack)

* Notable contributions:
    * UI and Icons : Chris Gordon
    * Original Logo : Michael Sersen
    * tight encoding : Michael Tinglof (Mercuri.ca)

* Included libraries:
    * web-socket-js : Hiroshi Ichikawa (github.com/gimite/web-socket-js)
    * as3crypto : Henri Torgemane (code.google.com/p/as3crypto)
    * base64 : Martijn Pieters (Digital Creations 2), Samuel Sieb (sieb.net)
    * jsunzip : Erik Moller (github.com/operasoftware/jsunzip),
    * tinflate : Joergen Ibsen (ibsensoftware.com)
    * DES : Dave Zimmerman (Widget Workshop), Jef Poskanzer (ACME Labs)