Edit colours in embedded SVG images

To be able to set the fill and stroke (line) colours of an embedded SVG via a CSS selector, add the editableCssRules key along with a regular expression without flags in the shape style.

Set an embedded SVG image to have editable colours in the format panel via the shape style description

Note: This only works for embedded SVG images, not for those that are included via a link. Insert an SVG image into your diagram via File > Import or by dragging the SVG file onto the drawing canvas.

Set the fill and line colours of an SVG to be editable

  1. Select the SVG in your diagram, then click Edit Style in the format panel (press Ctrl+E on Windows or Cmd+E on macOS, or select it from the right-click context menu).
    Select the SVG and click Edit Style in the format panel
  2. Add the editableCssRules and the regular expression that selects which elements you want to be able to style as a key=value pair in the style description. For example:
    • To allow all styles to be edited, editableCssRules=.*;.
      Select the SVG and click Edit Style in the format panel
    • To limit this in the example below to just st1 and st2, enter editableCssRules=\.st[02];.

Now, you can style the fill and line colours in the format panel.

Edit the fill and line colours of the embedded SVG in the format panel

For example, in the following SVG, the CSS rules in the <style> section define three CSS classes which are used to style the paths in the SVG.

<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 250 250">
<style type="text/css">
<path class="st0" d="M237.5,227.9c0,5.3-4.3,9.6-9.5,9.6c0,0,0,0,0,0H22.1c-5.3,0-9.6-4.3-9.6-9.5c0,0,0,0,0,0V22.1
<path class="st1" d="M237.5,227.9c0,5.3-4.3,9.6-9.5,9.6c0,0,0,0,0,0H89.6L44.8,192l27.9-45.5l82.7-102.7l82.1,84.5V227.9z"/>
<path class="st2" d="M197.1,138.3h-23.7l-25-42.7c5.7-1.2,9.8-6.2,9.7-12V51.5c0-6.8-5.4-12.3-12.2-12.3c0,0-0.1,0-0.1,0h-41.7

See this as an example in draw.io online

Note: Semicolons are not allowed in the style calues, as a semicolon is used to separate the key=value pairs in the shape style.

This feature is available in draw.io 8.7.0 and later.