Rotate Image 90° Clockwise
Rotate one decoded image 90° clockwise and export PNG with swapped dimensions; no flip or arbitrary angle.
About this rotate image 90° clockwise
Rotate one decoded image 90° clockwise and export PNG with swapped dimensions; no flip or arbitrary angle Processes media assets directly in the browser using HTML5 Canvas and WebAssembly decoders, ensuring zero file uploads.
Image processing & canvas pipeline
Draws the selected image on a canvas rotated 90° clockwise, swapping its natural width and height. This operation does not flip or offer another angle.
Worked image transformation example
Scenario: Rotate a 12×9 test PNG using the fixed clockwise operation.
Sample input:
Processing: Creates a 9×12 canvas, translates to its center, rotates Math.PI / 2, and draws the source centered.
Illustrative output:
Resolution, dimension & memory limits
Only 90° clockwise rotation is available; there is no flip, arbitrary angle, or metadata-preserving transformation.
Rotate Image 90° Clockwise image operations execute in client memory via HTML5 Canvas and browser decoders. Inspect output previews before replacing source assets.
In-memory image processing boundary
File buffers and document assets in Rotate Image 90° Clockwise are processed in-memory via local browser APIs with zero file uploads to CZOA servers.
Image format & W3C Canvas standards
W3C Canvas 2D context specifications and standard image container formats:
Rotate Image 90° Clockwise verification · Audit standards
How to use it
- Select a browser-decodable image.
- Swap output width and height and draw the source after a clockwise 90° Canvas rotation.
- Export PNG.
Frequently asked questions
How does Rotate Image 90° Clockwise transform an image?+
It creates a canvas with swapped decoded dimensions, translates to its center, rotates by Math.PI / 2, and draws the image around its own center. The resulting PNG is a clockwise 90-degree rotation.
What input and controls does Rotate Image 90° Clockwise provide?+
The page has one image-file chooser and Process locally. It has no angle field, counter-clockwise action, horizontal or vertical flip, crop, interpolation, background, or output-format control.
What limits apply to the rotated output?+
Only the fixed clockwise quarter-turn is implemented. The image must decode in the browser; the output is a PNG data URL with swapped width and height and does not preserve source metadata or support arbitrary-angle rotation.
What result and limits should I expect when using Rotate Image 90° Clockwise?+
For the 12×9 four-color fixture, expected output is 9×12: top-left blue, top-right red, bottom-left yellow, bottom-right green. The control has no flip or other angle.