How to Use the Image Color & Luminance Histogram Analyzer
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1
Upload an image or drop it into the dropzone.
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2
Inspect the combined RGB and individual Red, Green, Blue, and Luminance charts.
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3
Check for shadow clipping (under-exposure) or highlight clipping (over-exposure).
Practical Example & Use Case
Common Real-World Scenario
Inspecting photography exposure to ensure highlights aren't blown out and shadows retain detail.
Technical Notes & Limitations
Browser Engine Architecture
Analysis runs entirely in-browser using HTML5 Canvas. Very high resolution images are scaled to 1920px max dimension for speed.
Frequently Asked Questions
What does a histogram show?
The horizontal axis represents tonal brightness from pure black (0) to pure white (255). The vertical height shows the quantity of pixels at that brightness level.
Are my images uploaded to a server?
Never. Processing is 100% client-side inside your browser.