Does resizing change the artwork paths?

No. This first version changes root dimensions and preserves viewBox.

What size does it use?

The current quick tool sets width to 320px and computes height from the aspect ratio.

A configurable version is planned after the basic geometry tools are in place.

Edit

Resize SVG width and height while preserving the original viewBox coordinate system.

Resize SVG width and height while preserving the original viewBox coordinate system.

Choose an SVG file, paste SVG markup, or load the sample to begin.

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SVG Resize / Scale changes SVG width and height while preserving the original viewBox coordinate system.

The tool updates root width and height attributes. If a viewBox exists, the internal coordinate system is preserved.

Use it when an SVG needs fixed display dimensions but should keep the same artwork coordinates.