Lumina – Photo editor & image toolkit

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Lumina is a full program that runs in your browser and needs JavaScript. Please enable JavaScript, or use its engine as tools without it:

Photo Crop & Resize Planner – Plan a precise crop and output size before resizing a photo.
Photo Print Size Planner – Find how large your photo can print at your chosen resolution.
Photo Palette & Text Contrast – Check palette luminance and choose readable text for photos and graphics.
Photo Collage & Image Joiner – Make a photo grid or join photos horizontally and vertically.
Image Grid Splitter – Slice a photo into numbered tiles without losing edge pixels.
Photo to Animated GIF – Turn an ordered set of photos into a looping animated GIF.
Layer Transform & Bounds Planner – Calculate a layer transform, rotated corners and canvas bounds.
Layer Blend Color Mixer – Preview eight blend modes and opacity for two opaque colors.
Image Shape Mask & Feather – Clip a photo into a soft rectangle or ellipse with PNG transparency.
Photo Histogram & Clipping Analyzer – Inspect RGB histograms, clipped channels and tonal percentiles in a photo.
Photo Tone Curves & Profile Processor – Apply levels, RGB curves and white balance, or reuse a Lumina photo profile.