Rotate, Flip & Straighten
Load an image, rotate by any angle, flip horizontally/vertically, and export at full resolution. Processing is done in your browser-no uploads.
Drop image here…
Keyboard: A/D ±1° ·
Q/E ±90° ·
H flip H ·
V flip V ·
R reset ·
S save
Download PNG
Calculator
Original size
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Current canvas
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Megapixels
-
Aspect ratio
-
Angle
0.0 ° (0.000 rad)
RAM needed (RGBA)
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Print @300 DPI
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Print @150 DPI
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Formula
W′ = |w·cosθ| + |h·sinθ|, H′ = |w·sinθ| + |h·cosθ|
Examples
Straighten -3°
-2°
-1°
+1°
+2°
+3°
Use small "straighten" rotations and toggle the grid to align horizons or vertical edges.
Cheat Sheet (Rotate · Flip · Straighten)
Quick rotate: Q = -90°, E = +90°. Fine adjust with A/D = -/+1°.Straighten tip: Turn on Show grid and align a known straight edge to the grid.Flips: H = horizontal mirror, V = vertical mirror. Flips don't change dimensions.Angle sign: Positive rotates clockwise (screen space); negative = counter-clockwise.Canvas after rotation: W′ = |w·cosθ| + |h·sinθ|, H′ = |w·sinθ| + |h·cosθ| (θ in radians).Radians: θrad = θdeg x π/180.Memory estimate: W′xH′x4 bytes (RGBA). Example: 25 MP ≈ 100 MB in RAM.Reset: R resets angle and flips.Save: S or the "Download PNG" button exports a full-resolution PNG.
