SVG rendering is mostly consistent across modern browsers, but some edge cases exist — especially with filters, gradients, and pattern tiling. Here are the most commonly encountered issues and their fixes.

1. Blurry Patterns at Non-Integer Sizes

On some browsers, SVG patterns can appear blurry when the pattern tile size is fractional. Fix: ensure width and height on <pattern> are integers.

2. Radial Gradient Colour Banding

Safari sometimes renders radial gradients with visible banding. Fix: add a very subtle feGaussianBlur with stdDeviation="0.01" to smooth the transition.

3. feColorMatrix Saturation Clipping

Firefox historically clipped colour values outside the 0–1 range differently to Chrome. If you use feColorMatrix type="saturate", test both browsers.

4. xlink:href Deprecation

Modern SVG (2.0) uses href instead of xlink:href on <use> elements. All modern browsers support both, but avoid xlink:href in new SVG authoring.

5. External SVG <use> in CSS Backgrounds

A <use> referencing an external file won't resolve when the SVG is embedded as a data URI. Keep all <defs> inline — SVGeneration patterns always do this.

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