Svg font size css

Texts

When talking about text in SVG, we have to differentiate between two almost completely separate topics. One is the inclusion and display of text in an image, and the other is SVG fonts. The latter is described in a later section of the tutorial, while this page will focus on the first part: bringing text into an SVG image.

Basics

We have seen in the introducing example that the text element can be used to put arbitrary text in SVG documents:

text x="10" y="10">Hello World!text> 

The x and y attributes determine where in the viewport the text will appear. The attribute text-anchor , which can have the values «start» , «middle» , «end» or «inherit» , decides in which direction the text flows from this point. The attribute dominant-baseline decides the vertical alignment.

Like with the shape elements, text can be colorized with the fill attribute and given a stroke with the stroke attribute. Both may also refer to gradients or patterns, which makes simple coloring text in SVG very powerful compared to CSS 2.1.

Setting font properties

An essential part of a text is the font in which it is displayed. SVG offers a set of attributes, many similar to their CSS counterparts, to enable font selection. Each of the following properties can be set as an attribute or via a CSS declaration: font-family , font-style , font-weight , font-variant , font-stretch , font-size , font-size-adjust , kerning , letter-spacing , word-spacing and text-decoration .

Other text-related elements

tspan

This element is used to mark up sub-portions of a larger text. It must be a child of a text element or another tspan element. A typical use case is to paint one word of a sentence bold red.

svg width="350" height="60" xmlns="http://www.w3.org/2000/svg"> text> This is tspan font-weight="bold" fill="red">bold and redtspan> text> style>  text dominant-baseline: hanging; font: 28px Verdana, Helvetica, Arial, sans-serif; > ]]> style> svg> 

The tspan element has the following custom attributes:

Sets a new absolute x coordinate for the containing text. This overwrites the default current text position. The attribute may also contain a list of numbers that are one by one applied to the single characters of the tspan element.

Starts drawing the text with a horizontal offset dx from the default current position. Here, too, you may provide a list of values that are applied to consecutive characters, hence piling up the offset over time.

Likewise, there are y and dy for vertical displacement.

Rotates all characters by this degree. A list of numbers makes each character rotate to its respective value, with remaining characters rotating according to the last value.

Gives the calculated length of the string. This is a more obscure attribute, and it is meant to allow the rendering engine to fine-tune the positions of the glyphs when its own measured text length doesn’t meet the one provided here.

textPath

This element fetches via its xlink:href attribute an arbitrary path and aligns the characters, which it encircles, along this path:

svg width="200" height="100" xmlns="http://www.w3.org/2000/svg"> path id="my_path" d="M 20,20 C 80,60 100,40 120,20" fill="transparent" /> text> textPath xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#my_path"> A curve. textPath> text> style>  text dominant-baseline: hanging; font: 28px Verdana, Helvetica, Arial, sans-serif; > ]]> style> svg> 

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font-size

The font-size attribute refers to the size of the font from baseline to baseline when multiple lines of text are set solid in a multiline layout environment.

Note: As a presentation attribute, font-size can be used as a CSS property. See the CSS font-size property for more information.

You can use this attribute with the following SVG elements:

Example

html, body, svg  height: 100%; > 

svg viewBox="0 0 200 30" xmlns="http://www.w3.org/2000/svg"> text y="20" font-size="smaller">smallertext> text x="100" y="20" font-size="2em">2emtext> svg> 

Usage notes

For a description of the values, please refer to the CSS font-size property.

Specifications

Browser compatibility

BCD tables only load in the browser

See also

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SVG: Font Size

This page shows what the size unit mean exactly for text element.

Default Font Size

If no font size is set, default is 16.

Unit is User Coordinate

When you use font size attribute, e.g. E 16 , the unit is user coordinate.

svg width="100" height="100"> text x="0" y="100" font-size="100">E 100text> svg>

svg width="100" height="100" viewBox="0 0 500 500"> text x="0" y="500" font-size="100">E 100text>

Both SVG have font-size 100. But the first SVG has width height 100 100, the second SVG has user coordinate width height 500 500.

Percentage Value

Percentage value for font-size means with respect to default font-size value.

font-size=»100%» is the same as font-size=»16″

svg width="100" height="100"> text x="0" y="50" font-size="16">E 16text> text x="0" y="70" font-size="100%">E 100%text> svg>

svg width="100" height="100"> text x="0" y="100" font-size="200%">E 200%text> svg>

svg width="100" height="100" viewBox="0 0 500 500"> text x="0" y="500" font-size="200%">E 200%text> svg>

Both SVG’s text have font-size=»200%» , but the first SVG has width height 100 100, the second SVG has user coordinate width height 500 500.

font-size Attribute vs CSS

Font size can also be specified by CSS, example: style=»font-size:16px» .

When using CSS, a unit such as “px” is required. (this is required by CSS)

When using CSS, the “px” length has exact same meaning as SVG font size attribute without unit.

text x="0" y="50" font-size="30">E 30text> text x="0" y="80" style="font-size:30px">E 30pxtext>

CSS unit such as rem or em do not work.

CSS value such as 1rem , are translated into 16px, which in turn is 16 units in SVG user coordinates. They may become tiny or invisible, or huge and fill the screen, when you use user coordinates.

svg width="100" height="100"> text x="0" y="100" style="font-size:1rem">1remtext> svg>

svg width="100" height="100" viewBox="0 0 500 500"> text x="0" y="500" style="font-size:5rem">5remtext> svg>

Percentage Value with CSS

Percentage value with CSS has the same meaning as SVG attribute.

svg width="100" height="100"> text x="0" y="50" font-size="100%">E 100%text> text x="0" y="70" style="font-size:100%">E 100%text> svg>

svg width="100" height="100" viewBox="0 0 500 500"> text x="0" y="250" font-size="200%">E 200%text> text x="0" y="500" style="font-size:200%">E 200%text>

User Coordinate’s Unit Size

For how to compute a good font size when in user coordinate, see

SVG tutorial

• SVG Basics
• Path
• Path Elliptical Arc
• Circle Arc
• Specifying Styles
• Shape Styles
• Viewport
• viewBox
• ViewBox Unit Size
• Coordinate Transformation
• Text Element
• Font Size
• Structure Elements
• Scripting SVG
• SVG Clock
• Animation

Canvas Intro

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Svg font size css

The SVG element draws a graphics element consisting of text. It’s possible to apply a gradient, pattern, clipping path, mask, or filter to , like any other SVG graphics element.

If text is included in SVG not inside of a element, it is not rendered. This is different than being hidden by default, as setting the display property won’t show the text.

Example

html, body, svg  height: 100%; > 

svg viewBox="0 0 240 80" xmlns="http://www.w3.org/2000/svg"> style> .small  font: italic 13px sans-serif; > .heavy  font: bold 30px sans-serif; > /* Note that the color of the text is set with the * * fill property, the color property is for HTML only */ .Rrrrr  font: italic 40px serif; fill: red; > style> text x="20" y="35" class="small">Mytext> text x="40" y="35" class="heavy">cattext> text x="55" y="55" class="small">istext> text x="65" y="55" class="Rrrrr">Grumpy!text> svg> 

Attributes

Rotates orientation of each individual glyph. Can rotate glyphs individually. Value type: ; Default value: none; Animatable: yes

How the text is stretched or compressed to fit the width defined by the textLength attribute. Value type: spacing | spacingAndGlyphs ; Default value: spacing ; Animatable: yes

Global attributes

aria-activedescendant , aria-atomic , aria-autocomplete , aria-busy , aria-checked , aria-colcount , aria-colindex , aria-colspan , aria-controls , aria-current , aria-describedby , aria-details , aria-disabled , aria-dropeffect , aria-errormessage , aria-expanded , aria-flowto , aria-grabbed , aria-haspopup , aria-hidden , aria-invalid , aria-keyshortcuts , aria-label , aria-labelledby , aria-level , aria-live , aria-modal , aria-multiline , aria-multiselectable , aria-orientation , aria-owns , aria-placeholder , aria-posinset , aria-pressed , aria-readonly , aria-relevant , aria-required , aria-roledescription , aria-rowcount , aria-rowindex , aria-rowspan , aria-selected , aria-setsize , aria-sort , aria-valuemax , aria-valuemin , aria-valuenow , aria-valuetext , role

Usage notes

Categories	Graphics element, Text content element
Permitted content	Character data and any number of the following elements, in any order: Animation elements Descriptive elements Text content child elements

Specifications

Browser compatibility

BCD tables only load in the browser

Related

Found a content problem with this page?

This page was last modified on May 21, 2023 by MDN contributors.

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Support

Our communities

Developers

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998– 2023 by individual mozilla.org contributors. Content available under a Creative Commons license.

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