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Alpha Check Tool
Check if an image has alpha channel or transparent pixels
Image Input
URL
Upload File
Image URL
Check for Alpha
Image Preview
Upload an image to see preview
About Alpha Channels
• Alpha channel controls transparency in images
• PNG and WebP formats support full alpha transparency
• JPEG images never have alpha channels
• Alpha values range from 0 (fully transparent) to 255 (fully opaque)
• Semi-transparent pixels have alpha values between 1-254