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Your PNG stays on your device while this tool runs.
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PNG TRANSPARENCY CHECKER
PNG Transparency Checker
Find out whether a PNG actually uses transparency instead of only relying on the file format’s alpha capability.
Local browser processing
Check PNG transparency
Analyze alpha values locally and report whether transparent pixels are present.
1. Source
Choose or drop your PNG file
Drag it here or click to browse
Analyzing locally…
2. Result
Ready
Check PNG transparency
——
Transparent pixels—
Pixel count—
Benefits
Verify PNG alpha transparency
Browser-based
Analysis and supported processing use browser APIs locally.
Focused result
Analyze alpha values locally and report whether transparent pixels are present.
How it works
How to check PNG transparency
- 1Choose or drag in a PNG file.
- 2The browser decodes the image and checks pixel alpha values locally.
- 3Review whether transparency was detected and the estimated transparent-pixel percentage.
Keep working
Related tools
FAQ
Common questions
Can a PNG support transparency without using it?
Yes. A PNG can use a color type that supports alpha while every pixel is still fully opaque. This checker examines decoded pixel alpha values to distinguish those cases.
Is my PNG uploaded?
No. This tool processes the PNG locally in your browser and does not require an application-server upload.
Does this tool modify my original PNG?
No. The source file stays unchanged on your device. When the tool creates an edited result, it generates a separate output file for download.
Do I need to install image software?
No. The supported workflow runs in a modern browser, so no desktop image editor is required for this task.
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