Image Rotator
Turn sideways or upside-down pictures the right way up, or straighten a tilted horizon by a fraction of a degree. Rotate one image or a whole batch and download them at full resolution.
- Files stay on your device
- No sign-up
- Free to use
Straightening a tilted horizon? Use small angles with Crop to fill so no empty corners appear.
Rotation
Corners
Output
How to use Image Rotator
- Drop one or more images onto the upload area, or paste a screenshot.
- Use the 90° and 180° buttons for quick turns, or drag the Angle slider for any rotation in half-degree steps.
- For angles that are not a right angle, choose whether to expand the canvas or crop to fill, and pick the background colour.
- Select Rotate images and download the results.
Image Rotator features
Lossless right-angle turns
90°, 180° and 270° rotations move pixels without resampling, so the picture stays exactly as sharp as the original.
Precise straightening
Any angle from −180° to 180° in half-degree steps, previewed live, ideal for fixing a crooked horizon or a skewed scan.
Crop to fill
Automatically trims to the largest rectangle inside the rotated picture, so straightened photos have no empty corners.
Transparent or solid corners
When the canvas expands, fill the corners with transparency, white or black.
Batch rotation
Apply the same rotation to up to 50 images at once and download them together as a ZIP file.
Stays on your device
Images are rotated by your browser and never uploaded.
When to use Image Rotator
- Fixing phone photos that appear sideways on a computer or website.
- Straightening a horizon, building or document that was photographed at a slight angle.
- Turning scanned pages that were fed into the scanner upside down.
- Creating angled product shots or tilted images for designs.
- Rotating a batch of portrait photos for a slideshow in one step.
Image Rotator FAQ
Why does my photo look sideways on some sites but not on my phone?
Phones often save photos in the sensor’s orientation and add a note saying how to turn them. Some websites and older programs ignore that note. Rotating the image here writes the correct orientation into the pixels themselves, so it displays the same way everywhere.
Does rotating reduce quality?
Turns of 90°, 180° and 270° rearrange pixels exactly, with no quality loss beyond normal re-saving. Other angles require resampling, which softens fine detail very slightly, just as in any photo editor.
What is the difference between Expand canvas and Crop to fill?
Expand canvas keeps the entire picture and makes the image larger, leaving corner areas that are filled with the background. Crop to fill keeps the original proportions and trims the edges so no empty corners remain.
Can I keep the corners transparent?
Yes. Choose a transparent background and PNG or WebP output. JPG does not support transparency, so transparent corners become white in a JPG.
How do I straighten a horizon accurately?
Hold the comparison button to check the original, then adjust the angle until the horizon is parallel to the top edge of the preview. Most tilted photos need between 1° and 5°.
Why rotation is sometimes more than turning a picture
A digital photo can be “rotated” in two ways. The camera can record the orientation as a small metadata tag and leave the pixels as captured, or the pixels themselves can be rearranged. Most phones do the first, because it is instant. Software that respects the tag shows the picture upright; software that ignores it shows it sideways. This tool applies the tag when it opens the file and then writes upright pixels, which removes the ambiguity for good.
Rotating by a right angle is a perfect operation: every pixel moves to a new position and nothing is calculated. Any other angle is different, because the rotated pixel grid no longer lines up with the original one. Each new pixel has to be estimated from its neighbours, a process called interpolation. Modern browsers use high-quality smoothing for this, and for straightening, where angles are small, the softening is rarely visible.
Straightened images always face a geometric trade-off. A rotated rectangle needs a larger bounding box, so either the canvas grows and shows wedge-shaped corners, or the picture is cropped to the largest upright rectangle that fits inside. The crop option here calculates that rectangle exactly while keeping the original aspect ratio, which is the same approach used by the straighten tools in professional photo editors.
For documents, rotation is often the first step of a longer workflow. A page that is upright and straight produces far better results in OCR, so rotate scans before running them through Image to Text, and crop away the scanner bed afterwards with the Image Cropper.