Bū tools
Composition
Rule of thirds, golden spiral and other grids, on your photo.
What it does
Shows the classic composition grids on a neutral frame or on your photo, with a short card on how to use each one.
How
- Grid: thirds, golden ratio, golden spiral, diagonals, 45° diagonals, golden triangles, center, 4 × 4 and 5 × 5.
- Under the preview: Rotate and Flip move the golden spiral (8 positions) and the golden triangles (2 positions). They are greyed out for the other grids.
- Format: the one of your photo, or a common ratio (your photo is then cropped in the middle).
- Your photo, then Export (PNG): the photo with the grid, at its own size. Without a photo, the export is the grid alone on a transparent background, at the size you choose (1080p, 1440p, 4K or 8K: the long side is 1920, 2560, 3840 or 7680 px), to put over a monitor, an edit or a mockup.
Good to know
These grids are aids, not rules: they help you see the balance of an image. The golden spiral keeps its true shape: a golden rectangle is 1.618:1, between 3:2 and 16:9 (16:10 is the closest common format). In other formats it sits against one edge and leaves a band; some apps stretch it to the frame instead, which bends the curve.
Your photo stays on your device.
Free, no account, nothing is sent: it runs in your browser, even offline.
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