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For additional technical information, see mw:Help:TemplateData and mw:Extension:TemplateData.

Template:VisualEditor Portal Template:Stack

What is TemplateData?[edit source]

TemplateData is the standardized description of a template, used by VisualEditor to improve the template-editing experience for the user. VisualEditor includes a wizard to edit templates, but for the wizard to be most useful, it needs to present specific information to the user about each template, such as a short description of the template's purpose and its parameters. This information is codified formally (by any wiki editor) using TemplateData.

Editing without TemplateData[edit source]

Without TemplateData, each parameter needs to be added manually when inserting a new template.

VisualEditor - Template without TemplateData.png

No information is provided about what the value of the parameter should be.

VisualEditor - Template without TemplateData2.png

Editing with TemplateData[edit source]

With TemplateData, a list of supported parameters (and their description) is provided for the template.

VisualEditor - Template with TemplateData1.png

TemplateData provides context for each parameter, and makes it much easier for users to modify templates.

VisualEditor - Template with TemplateData2.png

Adding TemplateData[edit source]

Anyone can help by adding TemplateData to templates (particularly high-profile ones, such as infoboxes) so that they are easier to edit in VisualEditor. The following is a minimal example, placed on a template's documentation page:

  "description": "insert description here",
  "params": {
    "first parameter": {
      "label": "x",
      "description": "x",
      "type": "string",
      "default": "default value",
      "required": false

You can also add or edit TemplateData using a GUI, by pressing the following button which appears at the top of the edit page: Manage TemplateData

The TemplateData tutorial explains in detail how to add TemplateData information to a template.

Commonly used templates[edit source]

List maintenance[edit source]

Here is a list of the most commonly used templates. When you've added TemplateData to one, add a {{Done}} mark behind it; we'll update the list with new additions as we go. It's advisable to do a null edit on the main template page to force the system to update the database. You can also look at this list of popular templates with no TemplateData or this list of popular templates from May 2015.

  • For completed items, consult the bot-generated logging page Wikipedia:VisualEditor/TemplateData/List.
  • If you complete an item, add {{Done}} after the entry until the item appears on the logging page.
  • If you partly complete an item, add {{Partly done|<explain what still needs to be done>}} to the entry and do not remove it from this list until it is completed. Partly done items will appear on the logging page as if they were completed.
  • Templates not suitable for TemplateData or with technical problems: add {{Not done|<briefly explain why TemplateData couldn't be added>}} after the entry.

Data sources[edit source]

Previously unfinished template entries[edit source]

This list includes all high-usage templates that haven't been "Done" on the previous list, as of May 2015. Template:Div col

Template:Div col end

Over 100,000 uses in mainspace[edit source]

Template:Div col

Template:Div col end

Over 50,000 uses in mainspace[edit source]

Template:Div col

Template:Div col end

Over 10,000 uses in mainspace[edit source]

Template:Div col

Template:Div col end

Over 5,000 uses in mainspace[edit source]

Template:Div col

Template:Div col end

Low-use templates[edit source]

Main-space templates[edit source]

Following are templates which taking parameters but are used <250 times. There are thousands of templates which contain only content for transclusion and which take no parameters. These are not considered here. Template:Col-begin Template:Col-break




Orphans[edit source]

Following have no instances of use:

See also[edit source]