SVG vs Base64-Encoded PNG
Compare inline SVG against base64-encoded PNG data URIs for embedding small images directly without extra HTTP requests.
File Size and Scalability
Inline SVG markup is typically smaller and infinitely scalable for vector graphics, while base64-encoded PNG increases the original file size by roughly 33% and remains resolution-fixed, blurring when scaled up.
- SVG: smaller file size for vector content, scales without blur
- Base64 PNG: ~33% larger than the original binary, fixed resolution
- Both avoid extra HTTP requests by embedding directly inline
When Each Makes Sense
Use inline SVG for any vector-style graphic (icons, logos, illustrations), and reserve base64 PNG encoding for cases where you specifically need a photographic raster image embedded inline without a separate request.
- SVG: best choice for icons, logos, and any vector-style graphic
- Base64 PNG: only when embedding photographic raster content inline
- Avoid base64 for large images — the size penalty outweighs benefits
Frequently Asked Questions
Does base64 encoding always increase file size?
Yes — base64 encoding increases binary data size by roughly 33%, so it should be reserved for small images where avoiding an extra HTTP request outweighs that size penalty.
Can SVG be base64 encoded too?
Yes, but it's rarely necessary — since SVG is already text-based, embedding it directly as inline markup is more efficient than base64-encoding it into a data URI.
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