🔍 Transparent Background Checker

PNG and WebP support transparency (alpha channels). JPEG does NOT support transparency at all — any "transparent" JPEG will actually have a white or colored background. Always use PNG or WebP when you need transparent backgrounds for logos, product images, or graphics.

Transparent pixels (alpha = 0): Completely invisible — like holes in the image. Semi-transparent pixels (0 < alpha < 255): Have partial opacity, like soft shadows, glass effects, or anti-aliased edges. They blend with whatever background is behind them. Our tool counts both types separately so you know exactly what's in your image.

There are two possibilities: 1) Your PNG doesn't actually have transparency — it was saved without an alpha channel. 2) You're viewing it in an application that doesn't support transparency (like Windows Photos or some web browsers). Use our tool to verify — if transparency is detected, you'll see checkerboard patterns instead of white/black backgrounds.

Click the "Change / Add Background" button in the Actions section. This takes you to our AI Background Remover tool where you can add solid colors, gradients, or custom images as backgrounds. Perfect for product photos that need white backgrounds for Amazon/Etsy, or adding colored backgrounds to logos.

The alpha channel stores transparency information for each pixel. If an image has an alpha channel, it means transparency data exists. Our tool will show "✓ Yes" if alpha channel is detected, or "✗ No" if the image is fully opaque (no transparency). JPEG images never have alpha channels.

Absolutely! All processing happens locally in your browser using HTML5 Canvas API. Your images never leave your device — no uploads, no servers, no third parties. This makes it 100% secure for product photos, logos, and any sensitive images.