The built-in WYSIWYG editor on MDN is designed to make it as easy as possible to create, edit, and improve articles and other pages almost anywhere on the site. The editor window, shown below, is comprised of eight key boxes. This page will provide information about each section so you know how to use our entire editing environment.
We're constantly working on improvements to MDN, so there will be times when this documentation or the screen shots below may be slightly out-of-date. We'll periodically update this documentation, though, to avoid it being unusably behind.
The page controls area offers buttons affecting the page as a whole:
- Save and keep editing
- Saves the page without closing the editor; this lets you periodically save your work, creating an entry in the page history that you can revert to if you need to, or in case you need to stop working and come back to it later. This option is not available when creating new pages. See The revision comment box to learn how to include a revision comment on your saved article.
- Save changes
- Saves the page and closes the editor, returning you to view the page in standard browsing mode. See The revision comment box to learn how to include a revision comment on your saved article.
If you try to save your page and your changes are rejected as invalid, but the content is in fact appropriate for MDN, you should email the writing team for help getting your content posted.
- Preview changes
- Opens a new tab or window showing the page as it exists in your private editor, but rendered like you were browsing to it as if it were public. This includes executing any macros and templates you use in-content. Note that your work is not saved yet when you use this option, but this lets you check before your changes are made public, that you haven't made any errors in your macros, templates, or formatting that may prevent the page from rendering correctly.
- Note also that if the page does contain any badly-formed macros or templates, the Preview-mode page processor may generate a warning such as: "There was a scripting error on this page. While it is being addressed by site editors, you can view partial content below." Be assured that as long as you have not modified or added any macros or templates in the page, this error can be safely ignored and should go away when the edited page is finally saved and viewed normally again (unless it was already there in the normal view). However, if you are still unsure if you introduced the error, then simply open a copy of the normal page in a new window, enter Edit mode, and immediately Preview. If any errors occur now, you can be confident that you did not cause them, and that they will likely disappear as previously described.
- As for your changes, if these new errors are the same as the old errors from the old window, then simply close the new window and continue working in the old one. If they are different errors however, then you indeed might have damaged something in the old window, so just start carefully copying your changes to the new window, and Preview after each copy. If the old errors suddenly appear here too, then your last changes have likely caused them, and you should carefully examine that work. Finally, as a side benefit, if you Preview frequently and always leave that Preview window open, you will have a quick but unsaved copy of most of your changes should the editor fail or somehow lose your work (as may happen when trying to use Undo.)
Warning: Currently some macros and templates don't execute properly in Preview-mode, leaving the Preview page missing some of its content (such as sidebars), and thus with somewhat distorted page layout; i.e. not totally WYSIWYG. Further, if SCAYT (Spell-Check As You Type) is enabled (and possibly if the page contains certain valid macros or templates), Preview mode may still give a scripting error.
- Cancels your edit, disposing of any changes you've made without saving them. You're returned to the page in standard browsing mode.
Warning: Occasionally Undo can malfunction and start acting more like a partial "discard," undoing many of your changes without exiting the editor. If this happens to you, you should save, exit, and re-enter the editor.
The page info box
The page info box contains information about the page, but also can be expanded to offer additional page controls. By default, it displays the page's title and the date and time at which a local draft was saved; the local draft, stored on your computer, is used as a backup in case you accidentally navigate away from the editor or your browser crashes.
You can click the "Edit Page Title and Properties" link to switch to a view offering additional page controls. This view looks like this:
This view allows you to change the page's display title and the depth of the page's table of contents. The display title is the title shown in the browser's title bar (or tab bar) and as the title of the page at the top of the article and in the breadcrumb bar, as appropriate. It doesn't affect the page's URL.
It's worth noting that we prefer short URLs and descriptive titles; for example, the article about the Kuma API has the title "The Kuma API" but its URL slug (the part after the site's root) is Project:MDN/Kuma/API, where "API" represents this page.
The TOC (table of contents) level lets you specify how deeply into the article's heading levels the table of contents automatically displayed on the page should go. By default, heading levels
<h4> are included in the TOC, so that the TOC has a three-level depth. However, you can set this to any of those, as well as "No TOC" (to not display a TOC at all, such as on landing pages) or to show all levels in the TOC.
As is the case with all changes you might make, changes in the page info box do not take effect unless you save the page.
The editor's toolbar offers features that let you adjust the appearance and flow of the article as you work. There are two rows of buttons (more if the width of your window is narrow enough that they wrap, but generally two) and a third row that shows the hierarchy of HTML elements leading up to where you are. In the screenshot below, for example, you're writing inside a top-level
The toolbar's buttons are divided into seven groups. Let's look at each; we will examine the buttons in each group in order left-to-right.
The document options box provides options for document-level manipulations:
- Source mode toggle
- The source mode toggle button lets you toggle between editing using the WYSIWYG interface and in raw HTML source mode. We strongly request that you try to avoid using source mode, as it's very easy to wind up with content that doesn't match our style guide or, worse, doesn't work right at all. Currently, though, the editor has some quirks that make it impossible to do certain things without resorting to source mode. See Using source mode in the MDN editor for details on how to use source mode and the dos and don'ts involved.
- Save and keep editing
- A duplicate for the main "Save and keep editing" button.
- Save and exit
- Just like the main "Save changes" button.
If you try to save your edit and your changes are rejected as invalid, but the content is in fact appropriate for MDN, you should email the writing team for help getting your content posted.
- Paste as plain text
- Opens a dialog into which you can paste text; the text has all styling stripped from it so that you don't inadvertently introduce unwanted styles into the site content. Once you've pasted your text, you can (optionally) make changes, then click a button to insert it into the article you're working on.
When pasting content into MDN, please be aware that if pasting styled content (including, for example, syntax highlighting in code being copied from another site) that you may be bringing along unwanted and unneeded additional styles or classes. Please be careful not to do this; if necessary, review your edit in source mode to remove these unnecessary styles and classes (or check it before pasting, or use the "Paste as plain text" option instead).
- Paste from Word
- On Windows, lets you paste text from Microsoft Word and have it adjusted to work reasonably well in MDN's wiki. We prefer for you to not use this (the results will work but are not typically style guide compliant), but it's there for a few teams that need it.
- Check spelling
- Starts the spell checker.
- Enable SCAYT
- Activates SCAYT (Spell-Check As You Type); or if already activated, presents a submenu that lets you control and configure (or deactivate) the checker.
- Opens the Find panel in "Find" mode, which lets you search your document for a specified string.
- Opens the Find panel in "Find and replace" mode, allowing you to find strings and replace them with new ones.
It's worth noting that the Find and Replace buttons both take you to the same dialog box, which offers several configurable options for finding and optionally replacing text.
These buttons provide options affecting or creating blocks in your article.
- Insert/remove bulleted list
- Creates or removes a bulleted list from your article. Once you're working in a bulleted list, each time you press return, you will start a new bullet. The Tab key can be used to indent a level, and Shift + Tab will outdent a level. Pressing return on an empty bullet will exit bullet list mode. Right-clicking on the list lets you choose to edit the list's properties (specifically, the shapes of the bullets).
- Insert/remove numbered list
- Creates or removes a numbered list from your article. Once you're working in a numbered list, each time you press return, you will start a new bullet. The Tab key can be used to indent a level, and Shift + Tab will outdent a level. Pressing return on an empty bullet will exit numbered list mode. Right-clicking the list offers the option to open the properties dialog for the list; the properties include the style of the numbers (numbers, letters, Roman numerals, etc, and what number to start with).
- Definition list
- Creates a new definition list. Definition lists consist of a series of titles and definitions (this list you're reading right now is an example).
- Definition title
- Creates a new title in a definition list. If you're not already editing a definition list, a new one is created for you. Pressing return after entering a definition title automatically starts you editing a definition description.
- Definition description
- Creates a new description in a definition list. Pressing return on a description line automatically starts a new title. Pressing return twice will exit definition list mode.
- Decrease indent
- Shifts the indentation level to the left once; this is the same as Shift + Tab while in a list.
- Increase indent
- Shifts the indentation level to the right once; this is the same as tab while in a list.
- Inserts a blockquote. Please do not use this. Blockquotes are not part of our standard style guide, and this button will be removed in the near future.
- Inserts a new image into the article. See Adding images to an article below for details on how to use this option.
- Inserts a table into the article. See Working with tables for more information on tables in articles.
- Text color
- Lets you set the text foreground color. Please do not use this. We will switch to using CSS styles for all coloring soon.
- Background color
- Lets you set the text background color. Please do not use this. We will switch to using CSS styles for all coloring soon.
- Text direction left-to-right
- Sets LTR as the current text typing direction. Used only when covering localization/internationalization topics.
- Text direction right-to-left
- Sets RTL as the current text typing direction. Used only when covering localization/internationalization topics.
This is an odd box, in that it consists of just one button: Maximize. This button causes the editor interface (that is, the toolbar and the edit box) to take over your entire browser window, giving you as much space as possible to write.
The heading buttons let you insert a heading. Click one of these buttons to create a new heading at the corresponding depth. By default, H2 through H4 are included in the table of contents, but you can change this, as described in The page info box.
The next box is a drop-down menu offering a selection of special formatting options. These are:
- Removes all styling from the current block.
- Note box
- Creates a note box, as seen below. You should always start a note box with "Note:" in bold letters.
This is a note box.
- Warning box
- Creates a warning box, as seen below. These should always begin with "Warning:" in bold letters.
Warning: This is a warning box.
- Two columns
- Makes the selected text or the current block two columns instead of one, on browsers that support it.
- Three columns
- Makes the selected text or the current block three columns instead of one, on browsers that support it.
- Syntax box
- Creates a syntax box, such as the one shown below. You need to use the "PRE" button as well, to create a
<pre>block inside it. You probably won't see the yellow box until you do.
- SEO summary
- This special style is used to indicate a sentence or two that should be used as the article's summary for SEO purposes. It's also used by macros that automatically construct landing pages. If you don't specify this, MDN automatically uses the first paragraph of your article, but sometimes that's not the optimal text (or it's too much text), so this lets you override that.
Code samples and redirects
These buttons are mostly used for providing preformatted text (usually code samples), but our "insert redirect" button is, for some reason, here too.
- Inserts a
<pre>(preformatted text) block, or turns the current block into one. All code samples or examples of text output to a terminal should be in one of these blocks.
- Syntax highlighter
- The syntax highlighter lets you choose a language for which to apply syntax highlighting to the
<pre>(preformatted text) block; if you're not already in such a block, this will create one for you. Simply choose the language and you're good to go.
- Insert code sample template
- This button is used by the live sample system to help you quickly insert a new live sample. You don't need to use it, but it's there for convenience. See Using the live sample system for details on using this and other live sample features.
- Insert code sample
- Inserts into the document the appropriate macro to display a given live sample. See Using the live sample system for details on using this and other live sample features.
- Create a redirect
- Inserts a redirect. See Creating redirects for further information.
Inline styles and links
The final group of toolbar buttons includes options for creating and maintaining links and anchors, as well as for applying inline styles to content.
- Creates a new link. This button opens the link editor dialog, which is covered under Creating and editing links below.
- Removes the link at the insertion point.
- Creates an anchor at the insertion point.
- Toggles boldface text mode.
- Toggles italic text mode.
- Toggles underlined text mode.
<code>mode. This is used for inline presentation of variable names, function names, object names, filenames, and so forth.
- Strike through
- Toggles strikethrough mode.
- Toggles superscript mode. Please note that we don't use footnotes on MDN, so you should rarely if ever need this button.
- Remove format
- Removes the current formatting from the selection.
- Align left
- Makes the current block left-aligned. Please do not use this. We will be using CSS styles for all alignment tasks starting very soon.
- Centers the current block. Please do not use this. We will be using CSS styles for all alignment tasks starting very soon.
- Align right
- Makes the current block right-aligned. Please do not use this. We will be using CSS styles for all alignment tasks starting very soon.
The edit box
The edit box is, of course, where you actually do your writing. Right-clicking in the editor box offers appropriate additional options depending on the context of your click; clicking in a table offers table-related options and clicking in a list will offer list-related options, for example.
By default, the editor uses its own contextual menu when you right-click on the editor. To access your browser's default contextual menu (such as to access the Firefox spell checker's list of suggested corrections), hold down the Shift or Control key (the Command key on Mac OS X) while clicking.
The revision comment box
After you've made your changes, it's strongly recommended you add a comment to your revision. This is displayed in the revision history for the page, as well as on the Revision Dashboard. It helps to explain or justify your changes to others that may review your work later. To add a revision comment, simply type the note into the revision comment box before clicking either of the save buttons at the top of the page.
There are a few reasons this is helpful:
- If the reason for your change isn't obvious, your note can explain the reasoning to others.
- If your change is technically complex, it can explain to editors the logic behind it; this can include a bug number, for example, that editors can refer to for more information.
- If your edit involves deleting a large amount of content, you can justify the deletion (for example, "I moved this content to article X").
We know that the revision comment box being so far away from the save buttons doesn't make any sense. We're working on design changes that will fix that.
The tags box
Page tags help categorize and organize information, and help us identify pages that need special attention. Tags are also used to mark pages that are obsolete and may need to be deprecated or even deleted. It's incredibly useful to have good, clean tags on pages, so be sure to have good tags on articles you contribute to.
The tag box is near the bottom of the editor page, and looks like this:
Adding a tag
To add a new tag, simply click in the box and start typing:
Here we see the three already existing tags (as button-like objects) and our new tag as unadorned text. When we press Enter or Tab key (or comma), the new tag is committed to the list, and the list looks like this:
For a list of recommended tags, as well as a usage guide for specific tags, please see MDN tagging standards.
Removing a tag
There are two ways to remove a tag: you can click on the "x" icon next to its name in its button, or you can click to its right in the editor box and press the Backspace key on your keyboard.
Committing your changes
Your changes are not saved unless you click one of the save buttons at the top of the editor window. Scroll back to the top of the window if you don't see the buttons, then click one of the two green save buttons. Now your change has been committed.
The reviews box
MDN uses reviews to try to monitor and improve the quality of its content. This works by setting a flag on an article indicating that a review is needed. You can learn more about technical reviews and editorial review in the How to guides.
To request a review on the article you've worked on, simply toggle on the checkbox next to the type of review that's needed. Technical reviews should be requested any time you make changes to the explanation of how something technical works, while editorial reviews are a good idea when you've made changes and would like someone to review your writing and style choices.
Be sure to click one of the save buttons after making your selections, to commit your review request.
The attachments box
The attachments box lets you upload files to MDN for use in MDN content, as well as see what files are being used by the current document.
Due to a quirk in our current implementation, files are not associated with pages unless they're actually used in the page. So if you upload an attachment and don't make use of it before you save the article, it will not appear on the attachments list. So be sure to link to it or embed the image right away.
To add an attachment to the page, simply click the "Attach Files" button; this expands the attachment box to look like this:
As you see, there's a table that lets you select a file to upload, then give it a title and, optionally, a description and an additional comment. The title is mandatory, and should describe the file so its usage context is understandable. Once the fields are filled out and you've selected your file, click the "Upload" button to send it to MDN.
The most common use case for attachments is to add images to pages. When uploading an image, please be sure to use an image optimization tool to make the file as small to download as possible. This improves page load time and helps MDN's performance overall. You may use your preferred tool, if you have one. Otherwise, we suggest TinyPNG, a handy Web tool.
Only a select few types of files are permitted as attachments on MDN: GIF, JPEG, PNG, SVG, and HTML. Photoshop images are permitted but should be avoided except in very specific cases. Any other file types will not be allowed by the upload form.
Feel free to open this page in the editor and look at its attachment list at the bottom to get a feel for it.
Once a file has been attached, it will appear (by its title, as you specified in the form) in the image properties dialog box when using images in your article. See Adding images to an article for details on this interface. To link to other types of files, copy the URL from the attachments box and use that as your link target when adding links to the page using the link button in the toolbar.
There are a number of convenient keyboard shortcuts available to help you avoid taking your hands off the keyboard while you work. The shortcuts are listed for Windows and Linux; on Mac, instead of using the Control key, you can use the Command key.
|Ctrl + A||Select all|
|Ctrl + C||Copy to clipboard|
|Ctrl + V||Paste from clipboard|
|Ctrl + X||Cut|
|Ctrl + Z||Undo -- (Notice)|
|Ctrl + Y||Redo|
|Ctrl + K||Open link editor/add a new link|
|Ctrl + Shift + K||Removes the link at the current cursor position.|
|Ctrl + B||Bold|
|Ctrl + I||Italic|
|Ctrl + O||Toggle
|Ctrl + Shift + O||Toggle source view mode.|
|Ctrl + P||Toggles the
|Ctrl + U||Underline.|
|Ctrl + S||Save changes and close the editor.|
|Ctrl + Shift + S||Save changes without closing the editor.|
|Ctrl + 0||Remove formatting from the selected area (That's a zero, not the letter "O").|
|Ctrl + 2 through Ctrl + 6||Select heading level 2 through-6|
|Ctrl + Shift + L||Toggles between bulleted list, numbered list, and paragraph format|
|Tab||Increases indent level if in indent mode, otherwise inserts two spaces as a tab. Inside tables, this jumps to the next cell, or inserts a new row if there is no next cell. If the cursor is currently in the page title or in a heading, the cursor jumps to the next paragraph.|
|Shift + Tab||Decreases indent level if in indent mode. Inside tables, this jumps to the previous cell, or inserts a new row if there is no previous cell. If the cursor is currently in the page title or in a heading, the cursor jumps to the next paragraph.|
|Shift + Space||Inserts a non-breaking space (
|Shift + Enter||
Exits out of the current block. For example, if you're currently editing a
Not currently implemented; see bug 780055.