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How can I make an SVG scale with its parent container?

html
responsive-design
svg
css
Nikita BarsukovbyNikita Barsukov·Oct 5, 2024
TLDR

For responsive SVG scaling, set the width attribute to "100%", allowing it to fill the width of the container. Use the viewBox attribute to define the aspect ratio and scaling behavior of your SVG.

<svg width="100%" height="auto" viewBox="0 0 width height"> <!-- Here be dragons... and SVG content. --> </svg>

Preserve the aspect ratio by setting height to "auto". For stretching, set it to preserveAspectRatio="none".

Detailed breakdown

viewBox: The scaling maestro

An SVG scales appropriately when you properly stipulate the viewBox attribute. Picture viewBox as a viewport through which you witness your SVG. The four values—min-x, min-y, width, height—dictate the position and dimensions of your viewbox window, allowing the SVG to scale responsively within the parent container.

Employing CSS for responsiveness

Applying max-width: 100% in your CSS ensures your SVG won't overflow its parent container. Additionally, to control the SVG size, modify the dimensions of the SVG's parent container.

svg { max-width: 100%; /* SVGs gone rogue? Not on my watch. */ height: auto; /* Aspect ratio? Check. */ }

Managing container attributes

Tweak the parent container's CSS properties for further control:

  • resize: 'horizontal' provides the power of manual resizing.
  • With overflow: 'hidden', no scrollbars pop up while resizing.
  • Omitting the viewBox attribute ensures SVGs maintain the native aspect ratio.

SVG manipulation for scalability

Playing with aspect ratio

The preserveAspectRatio attribute of SVG provides control over how the SVG fits within its viewBox. Setting it to "none" results in your SVG stretching to fill the full container, creating fully responsive designs that can stretch or compress.

Moving SVG content

To shift the SVG within the parent container, tweak the min-x and min-y values of the viewBox attribute. You achieve greater control without upsetting the responsive behavior of the SVG.

Group and scale

Wrap SVG elements within a <g> tag for easier collective control. Apply CSS transform property for intricate scale manipulations.

<svg width="100%" height="auto" viewBox="0 0 width height"> <g transform="scale(0.5)"> <!-- SVGs partying here --> </g> </svg>

Merging CSS and JavaScript

Resizing may need JavaScript's granularity alongside CSS. Add event listeners for resize events on the parent container and subsequently influence the SVG viewBox values.

Techniques and tools for responsiveness

Versatility in design

SVGs offer scalability—a core feature, making them perfect for adaptive and responsive designs on any screen size for a perfect viewing experience across devices.

Manual viewBox additions

Older SVGs without a viewBox can behave unpredictably. Manually add it for responsive perks. Ensure the viewBox dimensions match the SVG's for consistent scaling.

Inline SVGs: The art of responsiveness

Adding inline SVGs within your HTML allows a connection with CSS responsiveness. Apply max-width and height settings for dynamic fit within any layout, eliminating the need for external files.