What is the difference between PNG transparency and GIF transparency?

PNG supports 256 levels of transparency per pixel (alpha channel), allowing smooth anti-aliased edges and semi-transparent effects. GIF only supports binary transparency — each pixel is either fully opaque or fully transparent, creating jagged edges.

Do all browsers support PNG alpha transparency?

Yes. All modern browsers (including IE9+) fully support 32-bit RGBA PNG with alpha transparency. IE6 had issues, but that's no longer relevant.

PNG with Alpha Channel — RGBA 32-bit

Download free 32-bit RGBA PNG files with full alpha channel support. Unlike binary transparency (GIF), PNG alpha allows 256 levels of opacity per pixel — enabling smooth edges, semi-transparent shadows, and gradient fades.

sample-rgba.png

22.5 KB

1000×1000 · 32-bit · transparent · RGBA

png

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transparent-logo.png

6.2 KB

500×500 · 32-bit · transparent · RGBA

png

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transparent-1080.png

42.1 KB