Rotate & flip image

Rotating images sounds trivial but has subtle technical depth. 90° rotations (90°, 180°, 270°) are lossless: pixels are simply reordered, no pixel value is altered. For JPG files this can even happen without re-encoding (jpegtran-style — DCT coefficients shifted in place), preserving the file byte-exact. Free rotations (any angle) are lossy, because the new pixel grid no longer aligns with the old — each target pixel is interpolated from multiple source pixels.

This tool rotates images locally in your browser. 90° steps take the lossless path; arbitrary angles trigger a re-render.

Common cases for 90° rotation.Phone photos shot in portrait but stored as landscape (often a software bug or accidentally enabled auto-rotate). Scans where the original was placed upside down. Screenshots from apps that exported with the wrong orientation tag.

Common cases for free rotation.Straightening a tilted horizon (typical 1–3° correction — the pyramid at the beach should be parallel to the bottom edge). Rotating images at a deliberate angle for collages or graphic layouts. Scans inadvertently fed in crooked.

Background for free rotation.Rotating a rectangular image by, say, 5° creates triangular regions at the corners that aren't covered by the source. These must be filled with a background color. The JNRT Pixel cropper lets you pick it — default white; black for dark themes; transparent for transparency-supporting outputs (PNG, WebP).

Resolution while rotating.A free rotation produces a bounding box slightly larger than the source (otherwise the corners would be clipped). To avoid that, crop the result afterwards via the cropper. 90° rotations simply swap width and height with no resolution loss.

EXIF Orientation.Some images carry an EXIF Orientation tag signaling viewers how to display the image. This tool updates the tag accordingly so the result displays correctly in any software.

Privacy.Local in your browser. No upload.