Visual Style


Wikimedia projects rely on writing and reading. Typography is a key component of their design. Consider the typeface, size, style, and spacing of your text to achieve good readability. Our typographic choices make our content accessible, present it in a neutral way, and convey its reliability.

Lato and Charter typeface specimen


Content should be readable by everyone, regardless of their circumstances. Color blindess or the sun on a device's screen should not be barriers to access.

Content typeset following the guidelines


Text layout is key to readability. Typographers and typesetters have been using grids to lay out text for centuries. We lay our content on a horizontal and a vertical grid.

Content layout aligning to grid

The whitespace between sections, complimentary block elements like images, and headings should be consistent and proportional to rest of the whitespace.


When using text, make sure that it provides enough contrast to be read comfortably. Check the contrast between the colors used for the text and its background. Provide at least level AA sufficient contrast (4.5:1). The color palette provides the contrast levels for pure white and black surfaces, but you need to ensure the contrast on other combinations.

Bento (弁当 bentō) is a single-portion take-out or home-packed meal common in Japanese cuisine.
Do: Contrast against the background
Bento (弁当 bentō) is a single-portion take-out or home-packed meal common in Japanese cuisine.
Don't: Low contrast below 4.5:1, especially at smaller sizes, makes text harder to read.

Tracking and leading

Text spacing. How text is placed in space can affect its readability. Follow these considerations for text paragraphs:

  • Line length for reading in English is ideally no longer than 75 characters.
  • Line height should be 1.6 times the size of the font used.

Dynamic text

Content will be available in multiple languages, and text length will vary for pieces of content across languages. Avoid designing interfaces that depend on certain expectations about text length.

Text shown at different font sizes depending on their length
Text shown at different font sizes depending on their length.

Here are few ways to tackle dynamic text:

  • Uncrowded user interface. Design with an eye for simplicity. Consider reducing the number of elements to ensure the remaining ones have enough room.
  • Dynamic layout. Make containers expandable, so that they can fit the content.
  • Dynamic text. Adjust the size depending on the content. Use a smaller font-size for long content.
  • Clipping. Clip the text with ellipsis, only if there is no risk of missing important information or the complete information is reachable through a clear alternative means.


Charter (supported by the Charis SIL font implementation) and Lato are the recommended typefaces, when available.

  • Charter is a serif typeface designed by Matthew Carter in 1987. Charter has a simplified and clean structure that works well, even on low resolution displays. Although Bitstream Charter is the original implementation for Charter, we recommend using Charis SIL since it provides a wider Unicode support.
  • Lato is a sans-serif typeface designed by Łukasz Dziedzic in 2010. Lato provides good readability even at small sizes.

These fonts are provided as a reference, but you may use similar criteria when those fonts are not available in your context.

Font selection criteria

Font selection depends on availability. Fonts are not always available for all scripts or all operating systems. The criteria for font selection is the following:

  1. Readability. Fonts with a bigger x-height and open shapes are preferred.
  2. Neutral aspect. The font should work with many different kinds of content without adding a particular voice to it.
  3. Simple shapes. Fonts with less complex shapes work better at smaller sizes, on low-resolution devices, and reduce printing costs.
  4. Open. Open source fonts are preferred to align with the open knowledge they deliver.

To extend the font family to new scripts or devices, the above criteria should be followed. Common cases in which you need to look for alternatives are:

Lack of a font delivery mechanism. In cases where custom fonts cannot be delivered to the user (e.g., through web fonts technology), you need to define alternatives. Default fonts such as Lato and Charter/Charis can still be recommended as primary options for users that installed those fonts themselves. A wider set of fallback options from those available in the user device/operating system may be needed. Possible fallback options:

  • Georgia (present in many operating systems) can be a fallback for Charter.
  • Operating system default sans-serif typefaces aka system fonts would be used when performance of web font loading, cross-language issues come into play or in the absence of Lato.
    Equivalent CSS code is
     * System font stack for sans-serif fonts
     * `-apple-system` ('San Francisco' font) – Support Safari 9+ macOS and iOS, Firefox macOS
     * `BlinkMacSystemFont` ('San Francisco' font) – Chrome 48+ macOS and iOS
     * `Segoe UI` – Windows Vista & newer
     * `Roboto` – Android 4.0+
     * `Lato` – Wikimedia Design choice, OFL licensed
     * `Helvetica, Arial, sans-serif` – (Generic) Web fallback
     * Note that standard `system-ui` value has resulted in unresolved side-effects in certain OS/language combinations as of now and is therefore not included.
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Lato, Helvetica, Arial, sans-serif;

Language support. There is no font that supports all languages. Individual language communities can identify fonts that better support their languages, taking into account the above criteria. Possible fallback option incude:

  • The Noto family provides a great coverage of languages, providing good alternatives for both serif and sans-serif typefaces.

Use of styles

The recommended styles are intended to optimize readability of Wikipedia’s dense encyclopedic content.

In our guidelines we use scale-independent pixels (sp). They can result in a different number of actual pixels in the user screen due to screen density or user preferences. A 16 sp text is rendered as 16 px in a 1x device at standard zoom level, but it becomes 21 px in a 2x device (or when zoomed 200% on a 1x device).

Common text styles are based on the defined scale to clearly communicate the content hierarchy.

Heading 1

Charter Regular 32 sp

Heading 2

Lato Bold / system sans-serif, bold 24 sp

Heading 3

Lato Bold / system sans-serif, bold 20 sp

Heading 4

Lato Bold / system sans-serif, bold 18 sp

Heading 5
Lato Bold / system sans-serif, bold 16 sp
Heading 6
Lato Regular / system sans-serif 16 sp


Lato Regular / system sans-serif 16 sp

Lead paragraph

Lato Regular / system sans-serif 18 sp

Block quotation
Charter Italic 20 sp, 3px border before in Base30
Lato regular / system sans-serif 14 sp
Figure caption
Lato Italic / system sans-serif, italic 13 sp
Small text
Lato Regular/ system sans-serif 13 sp
Unordered List
  • Lato Regular/
  • system sans-serif
  • 16 sp
  • CSS default values
  • List item first order list-style-type: disc; list-style-position: outside;
    • Nested list item order list-style-type: circle;
      • Nested list item third order list-style-type: square;
Ordered List
  1. Lato Regular/
  2. system sans-serif
  3. 16 sp
  4. list-style-position: outside;
    1. Nested list item
 * System font stack for monospace fonts
 * `Menlo` – macOS 10.6+
 * `Consolas` – Windows Vista & newer
 * `Liberation Mono` – Fedora, Ubuntu, … OFL licensed
 * `'Courier New', monospace` – (Generic) web font fallback
font-family: 'Menlo', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
font-size: 14px;