CodeMirror

CodeMirror is a versatile text editor implemented in JavaScript for the browser. It is specialized for editing code, and comes with a number of language modes and addons that implement more advanced editing functionality.

A rich programming API and a CSS theming system are available for customizing CodeMirror to fit your application, and extending it with new functionality.

This is CodeMirror

DOWNLOAD

FUND

Get the current version: 5.65.2.
You can see the code,
read the release notes,
or study the user manual.

Software needs maintenance,
maintainers need to subsist.
You can help per month or once.

Features

Support for over 100 languages out of the box
A powerful, composable language mode system
Autocompletion (XML)
Code folding
Configurable keybindings
Vim, Emacs, and Sublime Text bindings
Search and replace interface
Bracket and tag matching
Support for split views
Linter integration
Mixing font sizes and styles
Various themes
Able to resize to fit content
Inline and block widgets
Programmable gutters
Making ranges of text styled, read-only, or atomic
Bi-directional text support
Many other methods and addons...

Community

CodeMirror is an open-source project shared under an MIT license. It is the editor used in the dev tools for Firefox, Chrome, and Safari, in Light Table, Adobe Brackets, Bitbucket, and many other projects.

Development and bug tracking happens on github (alternate git repository). Please read these pointers before submitting a bug. Use pull requests to submit patches. All contributions must be released under the same MIT license that CodeMirror uses.

Discussion around the project is done on a discussion forum. Announcements related to the project, such as new versions, are posted in the forum's "announce" category. If needed, you can contact the maintainer directly. We aim to be an inclusive, welcoming community. To make that explicit, we have a code of conduct that applies to communication around the project.