SVG vs Canvas: Which for Web Graphics?
SVG and Canvas are both ways to render graphics in browsers, but they work completely differently.
Fundamental Difference
SVG and Canvas take opposite approaches to web graphics.
- SVG: declarative — describes shapes in the DOM; each element is an object
- Canvas: imperative — draws pixels programmatically; no individual element objects
- SVG: every element targetable by CSS and JS events
- Canvas: one element; content is just pixels — no individual targeting
- Analogy: SVG is like HTML (structured); Canvas is like a photo (just pixels)
When to Choose Each
Element count and interactivity requirements determine the right choice.
| Use Case | SVG | Canvas |
|---|---|---|
| Interactive charts (<5,000 elements) | ✓ Better | Overkill |
| Data viz with 100,000+ points | Too slow | ✓ Required |
| Accessible graphics | ✓ Native ARIA | Complex workarounds |
| CSS animation | ✓ Native | Manual (RAF) |
| Image manipulation | Limited | ✓ Pixel-level access |
| Logo/icon rendering | ✓ Perfect | Not appropriate |
Frequently Asked Questions
Is SVG faster or slower than Canvas?
SVG is faster for small numbers of elements (<5,000). Canvas is faster for large numbers or real-time pixel manipulation.
Can I use both SVG and Canvas on the same page?
Yes — they're complementary. Use SVG for icons, charts, and static graphics; use Canvas for photo editing or game rendering.
Which is better for data visualization?
SVG for interactive charts with hover tooltips and accessible data. Canvas for large datasets (10,000+ data points) where SVG DOM performance becomes a bottleneck.
Does SVG work in mobile browsers?
Yes — SVG is universally supported in all modern mobile browsers.
Is WebGL better than Canvas?
WebGL uses the GPU for massively parallel rendering. Use WebGL for 3D graphics, particle systems, and game engines.
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