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Image Tools
Open tool Image Collage Maker
Arrange two to nine images in a fitted PNG grid.
BUILT AROUND YOUR WORK
Image, color, and media tools for creative work
An asset is not ready just because it looks good on your screen. Check its dimensions, file size, color contrast, and destination requirements before handing over the final pack.
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Image Tools
Open tool Image Color Inverter
Invert each still-image RGB channel to its colour complement while preserving alpha.
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Open tool Image Edge Density Report
Report visible Sobel-gradient coverage at a fixed documented threshold.
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Open tool Image Emboss Effect
Create a neutral-gray directional relief rendering with a fixed 3x3 convolution.
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Open tool Image Entropy Report
Calculate base-two Shannon entropy over the visible luminance histogram.
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Open tool Image Error Diffusion Dither
Create a one-bit image with bounded Floyd-Steinberg luminance error propagation.
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Open tool Image Exposure Adjuster
Scale decoded RGB channels by a selected number of power-of-two exposure stops.
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Open tool Image Favicon Generator
Create a PNG-compressed 32-pixel ICO favicon.
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Open tool Image Film Grain Adder
Add bounded deterministic luminance variation without changing image dimensions.
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Open tool Image Flip
Mirror images horizontally or vertically.
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Open tool Image Gamma Correction
Apply a bounded nonlinear gamma curve to still-image RGB channels.
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Open tool Image Grayscale Maker
Convert still-image RGB channels to neutral luminance tones while preserving alpha.
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Open tool Image Grayscale Neutrality Report
Report near-neutral visible coverage under an eight-byte RGB spread tolerance.
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Open tool Image Halftone Effect
Render cell-average luminance as bounded circular dots in a lossless PNG.
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Open tool Image Hue Circular Concentration Report
Report weighted circular mean hue and resultant concentration.
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Open tool Image Hue Rotator
Rotate decoded RGB hue through a bounded W3C-style colour matrix.
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Open tool Image Laplacian Edge Map
Create an absolute four-neighbor second-derivative luminance map.
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Open tool Image Lightness Distribution Report
Report decoded HSL lightness mean, quartiles, and extrema.
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Open tool Image Local Contrast Report
Report RMS luminance deviation from a clamped three-by-three local mean.
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Open tool Image Luminance Axis Profile Report
Export visible decoded-luminance counts and means for every row and column.
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Open tool Image Luminance Centroid Report
Report alpha-weighted decoded-luminance center in pixel and normalized coordinates.
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Open tool Image Luminance Extrema Location Report
Locate first row-major minimum and maximum visible luminance samples.
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Open tool Image Luminance Histogram Report
Export a complete 256-bin visible decoded-luminance distribution as JSON.
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Open tool Image Luminance Median Deviation Report
Report visible luminance median and robust median absolute deviation.