Code Quality Rank: L5
Monthly Downloads: 141,834
Programming language: Ruby
License: MIT License
Tags: Misc    
Latest version: v1.3.5

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Clipboard Ruby Gem version

Lets you access the clipboard from everywhere. Currently supported platforms:

  • Linux
  • MacOS
  • Windows
  • Cygwin (POSIX environment for Windows)
  • WSL (Windows Subsystem for Linux)
  • Gtk+ (Cross Platform Widget Toolkit)
  • Java (on JRuby)

Supported Rubies: 2.7, 2.6, 2.5

Unsupported, but might still work: 2.4, 2.3, 2.2, 2.1, 2.0


  • Clipboard.copy - Copies a string to system clipboard
  • Clipboard.paste - Paste contents from system clipboard as string
  • Clipboard.clear - Empties the system clipboard


Add the following lines to your Gemfile:

gem "clipboard"
gem "ffi", :platforms => [:mswin, :mingw] # Required by Clipboard on Windows
  • Important note for Linux users: The clipboard requires the xsel or the xclip command-line program. On debian and ubuntu, xsel can be installed with: sudo apt-get install xsel

Clipboard Implementations

In most environments, the appropriate clipboard implementation can be detected automatically. If none is found, the gem will fallback to a file based one, which will just write to/read from ~/.clipboard instead of the system clipboard.

You can check the implementation used with: Clipboard.implementation

Alternative Clipboard Providers

There are two implementations included in this gem, which are not used by default. You can opt-in to use them if you think they are a better fit for your application environment:


Activate with: Clipboard.implementation = Clipboard::Java

This is an option for JRuby users which will use the clipboard functionality from the Java standard library.


Activate with: Clipboard.implementation = Clipboard::Gtk

This utilizes the GTK+ library. See Ruby-GNOME2 for more info.

Requires the gtk3 or gtk2 gem to be installed.

Tips & Tricks

Linux: Using Clipboard via SSH

To be able to use the clipboard through SSH, you need to install xauth on your server and connect via ssh -X or ssh -Y. Please note that some server settings restrict this feature.

Linux: Paste From Specific X11 Selection

The clipboard on Linux is divided into multiple clipboard selections. You can choose from which clipboard you want to paste from by passing it as an argument. The default is :clipboard, other options are :primary and :secondary.

Clipboard.copy always copies to all three clipboards.

Windows: Encoding Info

Windows uses UTF-16LE as its default encoding, so pasted strings will always come in UTF-16. You can then manually convert them to your desired encoding, for example, UTF-8, using the [String#encode](ruby-doc.org/core-2.3.0/String.html#method-i-encode) method:


CLI Utility: blip

The [blip gem]((https://gist.github.com/janlelis/781835)) is a handy command-line wrapper for the clipboard gem. It lets you quickly copy file content to your clipboard:

$ blip FILE_NAME

Without any arguments, it will just paste the contents of the clipboard.


Copyright (c) 2010-2020 Jan Lelis https://janlelis.com released under the MIT license. Contributions by and thanks to Michael Grosser and all the other contributors!

*Note that all licence references and agreements mentioned in the Clipboard README section above are relevant to that project's source code only.