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Photo & image · 4 tools

Free photo & image tools

Tools for photographers and image makers. Plan a shot with depth of field, hyperfocal and exposure calculators, work out long exposures with ND filters, turn any picture into halftone dots for screen printing, into 1-bit or Game Boy style dithering, or into a Minecraft build with a complete block shopping list.

Image processing happens on your device, and every calculator explains the optics behind its numbers so you understand the result instead of just copying it.

Image dithering tool

DitherImage · 31 pages · 7 guides

Free online image dithering tool. Convert photos to 1-bit, Game Boy, PICO-8 or custom-palette pixel art with 13 algorithms. 100% in-browser, no upload, no sign-up.

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Guides

Halftone generator

DotScreen · 24 pages · 6 guides

Free online halftone generator: turn any image into dots, lines, squares or CMYK screens. Set angle, cell size and dot gain, then export PNG or vector SVG. No upload.

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Guides

Minecraft pixel art generator

BlockPixel · 25 pages · 6 guides

Turn any image into Minecraft pixel art or map art: wool, concrete, terracotta or map colors, block count in stacks and shulker boxes, grid and .schem export.

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Guides

Depth of field & exposure calculators

FStopCalc · 53 pages · 7 guides

Calculate depth of field, near and far focus limits and hyperfocal distance for any camera, lens and aperture. Visual diagram, meters or feet. Free, no app.

Open depth of field & exposure calculators →

Guides