SVG Hover Effects with CSS
From simple color shifts to line-drawing animations — CSS hover effects that make SVG icons and graphics feel alive.
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The Embedding Rule That Gates Everything
CSS from the page can only style SVG internals when the SVG is inline in the DOM. Icons loaded via <img> or background-image can't have their fills changed on hover — only whole-element effects (opacity, transform, filter). Inline your interactive icons; keep static decoration external.
- Inline SVG: full CSS access to fills, strokes, and parts
- <img> SVG: only opacity/transform/filter hover effects
- Inline interactive icons; external for static decoration
Effect Recipes
Fill transitions: set fill on paths, change on :hover with transition: fill 200ms. Stroke draw-in: animate stroke-dashoffset from the path length to 0 for a drawing effect. Micro-motion: scale or rotate sub-elements with transform-origin control. Combine sparingly — sub-200ms transitions read crisp, not sluggish.
- transition: fill for smooth color changes on paths
- stroke-dashoffset animation creates line-drawing hovers
- Sub-element transforms need explicit transform-origin
Frequently Asked Questions
Why doesn't my icon change color on hover?
It's loaded via <img> or background-image, so page CSS can't reach the paths. Inline the SVG markup, or use currentColor fills with a hover color change on the parent.
Are CSS SVG hover effects good for performance?
Yes — transform and opacity effects run on the compositor. Avoid animating filter-heavy effects on many elements simultaneously; those hit the CPU.
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