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Atto: HTML+

Maintained by Picture of Andrew Nicols Andrew Nicols
An extended HTML plugin for atto which adds source beautification, and the code mirror source editor.


The htmlplus plugin provides a version of the HTML plugin with both syntax highlighting and code beautification. It also provides indentation support.


  • Place in lib/editor/atto/plugins
  • Upgrade your Moodle
  • Navigate to Site administration -> Plugins -> Text editors -> Atto HTML editor -> Atto toolbar settings
  • Replace any occurrence of the html plugin with htmlplus


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Picture of Andrew Nicols
Andrew Nicols (Lead maintainer)
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  • Picture of olivier delhaye
    Thu, Jun 4, 2015, 6:56 AM
    Thanks. smile
  • Just wondering . . .
    Mon, Jun 22, 2015, 7:17 AM
  • Picture of Stephen Leonard
    Wed, Jul 15, 2015, 10:53 PM
    This plugin looks fantastic. Is there any chance this will be updated to work in 2.9?
  • Picture of Michael Hanson
    Mon, Jul 27, 2015, 9:09 AM
    Are there plans to update this plugin to work in Moodle 2.9?
  • Picture of Dimitri Vorona
    Fri, Aug 7, 2015, 4:08 PM
    The version working with Moodle 2.9 can be found at in the master branch. We've sent a pull-request to Andrew, how he'll merge it soon.
  • Picture of Jeff White
    Fri, Sep 18, 2015, 3:05 AM
    Amazing plugin!
  • Picture of Pau Ferrer Ocaña
    Tue, Sep 22, 2015, 6:40 PM
    Wow! It should be great to have that plugin replacing the current html into core! :D
  • Picture of Pau Ferrer Ocaña
    Tue, Sep 22, 2015, 6:41 PM
    One commet: Like the plugin html, the plugin htmlplus should not disable the fullscreen button when enabled wink
  • Just wondering . . .
    Tue, Dec 15, 2015, 8:12 PM
    Does this Atto plugin work with Moodle 3.0?

  • Picture of Mark McKay
    Wed, Dec 30, 2015, 5:52 AM
    I second Derek's request for 3.0 compatability. Thanks in advance!
  • Just wondering . . .
    Tue, Jan 5, 2016, 9:53 AM
    I was not requesting compatability. I was merely asking *if* it was compatible.
    I've been caught too often thinking things were not going to work when they do.
    AND I've trashed my site sometimes when it is not compatible.

  • Picture of Gregory Faller
    Thu, Jan 7, 2016, 7:04 AM
    Hi Andrew, thanks for your work on this plugin. It is a great addition to the Atto editor and seems like it would make a great candidate for inclusion in Moodle core. We have been able to make Atto the default editor at our institution with features like HTML+, autosave, accessibility checker and drag and drop image upload giving Atto the edge over TinyMCE.
  • Picture of Andrew Nicols
    Thu, Jan 7, 2016, 7:58 AM
    Hi all,

    I've now tested the plugin with 3.0 and updated the compatibility matrix accordingly.

    If you'd like to see this plugin go into core and to replace the standard html plugin, please vote on

  • Just wondering . . .
    Thu, Jan 7, 2016, 8:46 AM
    Voted. Thanks Andrew.
    And @Gregory. Drag and Drop image upload is now built in with Atto

  • John Provasnik at Moodle Moot US
    Thu, Jun 2, 2016, 2:59 AM
    Love this plug in. I have 1 issue and am curious if others are experiencing this.
    When using a Mac with Firefox, Chrome, or Safari, I cannot do a Command Find search of a term within the HTML+ window unless the term is presently in the Window.
    With the regular ATTO HTML or TinyMCE HTML buttons, the page will scroll down to the first instance of the search term. In otherwords, I cannot do a Find for a term that is not currently in view. I wanted to see if this is something others have experienced. Thank you,
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