Rotate Image Online

A 90° or 180° rotation keeps the same rectangle, just turned, so the output stays the same size as the original. Any other angle tilts the rectangle, and a tilted rectangle needs a larger bounding box to hold it without cropping off a corner. That's why rotating by, say, 15° or 45° produces a larger canvas than the source photo.

If you export that larger canvas as a JPG, the newly added corners have nothing to show, so they're filled with solid white rather than left transparent, since JPG can't store transparency. Export as PNG or WebP instead if you want those corners to stay transparent.

A common use for the angle slider is straightening a photo where the horizon or a wall edge leans a few degrees off level. Nudge the angle a couple of degrees at a time and watch the live preview until the line you're using as a reference looks level, then download.

Small corrections like this usually land between -5° and 5°, so the added canvas size is modest. Larger corrections are still possible up to the full -180° to 180° range, just keep in mind that the further you turn away from a 90° step, the more extra white or transparent canvas the output picks up around the original photo.

Rotation happens entirely on your device, using the canvas built into your browser. The photo is never uploaded, and as a result EXIF data such as GPS location is dropped from the downloaded file, since nothing reads or rewrites it during local processing.

This also means the rotate tool works offline once the page has loaded, and nothing about the image, its filename, or its content is sent anywhere while you adjust the angle or preview the result.