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## noVNC: HTML VNC Client Library and Application

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

### Description

noVNC is both a HTML VNC client JavaScript library and an application built on
top of that library. noVNC runs well in any modern browser including mobile
browsers (iOS and Android).

Many companies, projects and products have integrated noVNC including
[OpenStack](http://www.openstack.org),
[OpenNebula](http://opennebula.org/),
[LibVNCServer](http://libvncserver.sourceforge.net), and
[ThinLinc](https://cendio.com/thinlinc). See
[the Projects and Companies wiki page](https://github.com/novnc/noVNC/wiki/Projects-and-companies-using-noVNC)
for a more complete list with additional info and links.

### Table of Contents

- [News/help/contact](#newshelpcontact)
- [Features](#features)
- [Screenshots](#screenshots)
- [Browser Requirements](#browser-requirements)
- [Server Requirements](#server-requirements)
- [Quick Start](#quick-start)
- [Integration and Deployment](#integration-and-deployment)
- [Authors/Contributors](#authorscontributors)

### News/help/contact

The project website is found at [novnc.com](http://novnc.com).
Notable commits, announcements and news are posted to
[@noVNC](http://www.twitter.com/noVNC).

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

Bugs and feature requests can be submitted via
[github issues](https://github.com/novnc/noVNC/issues). If you have questions
about using noVNC then please first use the
[discussion group](https://groups.google.com/forum/?fromgroups#!forum/novnc).
We also have a [wiki](https://github.com/novnc/noVNC/wiki/) with lots of
helpful information.

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/novnc/noVNC/issues?labels=patchwelcome).
Please check our
[contribution guide](https://github.com/novnc/noVNC/wiki/Contributing) though.

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 [@noVNC](http://www.twitter.com/noVNC) if you do.


### Features

* Supports all modern browsers including mobile (iOS, Android)
* Supported VNC encodings: raw, copyrect, rre, hextile, tight, tightPNG
* Supports scaling, clipping and resizing the desktop
* Local cursor rendering
* Clipboard copy/paste
* Licensed mainly under the [MPL 2.0](http://www.mozilla.org/MPL/2.0/), see
  [the license document](LICENSE.txt) for details

### Screenshots

Running in Firefox before and after connecting:

<img src="http://novnc.com/img/noVNC-1-login.png" width=400>&nbsp;
<img src="http://novnc.com/img/noVNC-3-connected.png" width=400>

See more screenshots
[here](http://novnc.com/screenshots.html).


### Browser Requirements

noVNC uses many modern web technologies so a formal requirement list is
not available. However these are the minimum versions we are currently
aware of:

* Chrome 49, Firefox 44, Safari 10, Opera 36, IE 11, Edge 12


### Server Requirements

noVNC follows the standard VNC protocol, but unlike other VNC clients it does
require WebSockets support. Many servers include support (e.g.
[x11vnc/libvncserver](http://libvncserver.sourceforge.net/),
[QEMU](http://www.qemu.org/), and
[MobileVNC](http://www.smartlab.at/mobilevnc/)), but for the others you need to
use a WebSockets to TCP socket proxy. noVNC has a sister project
[websockify](https://github.com/novnc/websockify) that provides a simple such
proxy.


### Quick Start

* Use the launch script to automatically download and start websockify, which
  includes a mini-webserver and the WebSockets proxy. 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. Hit the Connect button, enter a password if the VNC server has one
  configured, and enjoy!


### Integration and Deployment

Please see our other documents for how to integrate noVNC in your own software,
or deploying the noVNC application in production environments:

* [Embedding](docs/EMBEDDING.md) - For the noVNC application
* [Library](docs/LIBRARY.md) - For the noVNC JavaScript library


### 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)
    * [Pierre Ossman](https://github.com/CendioOssman) (Cendio)

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

* Included libraries:
    * as3crypto : Henri Torgemane (code.google.com/p/as3crypto)
    * base64 : Martijn Pieters (Digital Creations 2), Samuel Sieb (sieb.net)
    * DES : Dave Zimmerman (Widget Workshop), Jef Poskanzer (ACME Labs)
    * Pako : Vitaly Puzrin (https://github.com/nodeca/pako)

Do you want to be on this list? Check out our
[contribution guide](https://github.com/novnc/noVNC/wiki/Contributing) and
start hacking!