Check a composition against classic guides: rule of thirds, phi grid, golden spiral (in any orientation), dynamic diagonals and center lines. Export the overlaid image for teaching or critique.
Runs entirely in your browser — your photos never leave your device.
Drop a photo here
or click to choose · paste works too · nothing is uploaded
or click to choose · paste works too · nothing is uploaded
FAQ
Should every photo follow the thirds?
No — guides help you understand why a composition works, not rules to obey.
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