petercollingridge / SVG-Optimiser

A python module to clear up SVG files, especially those created in Inkscape

Python program to clean up SVG files, particularly those created by Inkscape or Illustrator

--- Current Functionality ---

Remove attributes

Remove attributes with a given name, e.g. remove 'id' attributes, which often aren't used.

Remove comments

Removes all comments.

Remove elements

Remove elements by their tag name.

Remove namespaces

Remove all attributes associated with a given namespace, e.g. remove 'sodipodi' attributes created by Inkscape.

Remove redundant groups

Move child elements outdside of group with no attributes, then delete group.

Set decimal places

Rewrite attributes to a given number of decimal places.
Strip out unnecessary trailing zeros.

• Attributes
  • x, y, x1, y2, x2, y2
  • cx, cy
  • r, rx, ry
  • width, height
  • points
  • d

Apply transformations

Applies transformations to elements so the attribute can be removed.

• Translation

  • In the form

    • comma: (12,34)
    • space(s): (12 34)
    • comma and space(s): (12, 34), (12 ,34), (12 , 34)
    • decimal: (1.2, 3.4)
    • negative: (-1.2, -3.4)

  • Shapes

    • line
    • rect
    • circle, ellipse
    • polyline, polygon
    • path (not fully tested)
    • g (not fully tested)

• Scale

  • Shapes
    • path
    • rect

CSS stlying

Convert individual style attributes to CSS styling.
Remove default styles.

--- To Do ---

Remove namespaces

Remove xml namespace if possible

Groups

Remove unnecessary groups
Remove unnecessary text groups
Add groups in make styling and transforms more efficient

Transformations

• Translation

  • In the form

    • single: (12)

  • Shapes

    • text
    • tspan

• Rotation

  • Shapes
    • path
    • polyline/polygon
    • line
    • circle
    • rect -> polygon/path?

• Scale

  • Shapes
    • polyline/polygon
    • line
    • circle -> ellipse?

• SkewX and SkewY

  • Shapes
    • line
    • path
    • polyline/polygon
    • rect -> polygon/path?
    • circle -> path arc?

• Matrix

  • Shapes
    • line
    • path
    • polyline/polygon
    • rect -> polygon/path?

CSS styling

Need to check whether style element already exists and whether class names already exist.
Ideally find most efficient way to class elements for styling.

License