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  1. Home
  2. Image
  3. Image Rotator
Image

Image Rotator

Rotate a JPG, PNG, or WebP image by 90°, 180°, 270°, or any custom angle from 0–360°, right in your browser using the Canvas API. See a live before/after preview and download the rotated result instantly.

Try:

Drag and drop an image here, or click below to browse. JPG, PNG, and WebP supported.

How To Use

  1. 1.Drag and drop an image onto the upload area, or click it to browse your files — JPG, PNG, and WebP are all supported.
  2. 2.Click 90° CW or 90° CCW to rotate in 90° steps clockwise or counter-clockwise, or click 180° to flip the image upside down in one step.
  3. 3.Type an exact value into the custom angle field for any rotation from 0° to 360°, including in-between angles like 15° or 45°.
  4. 4.Compare the Before and After previews side by side — the canvas automatically resizes so the fully rotated image is never clipped, even at odd angles.
  5. 5.Copy the rotated image to your clipboard, download it, or share a link to this tool once you're done.

Examples

Landscape sample
A generated landscape-oriented sample — try the 90° presets to see the canvas dimensions swap.
Square sample
A generated square, high-detail sample — good for testing a custom angle like 45°.
Transparent PNG sample
A generated PNG with real transparency, to confirm the enlarged canvas corners stay transparent.

About Image Rotator

What Image Rotation Does

Rotation spins an image around its center point by a chosen angle, repositioning every pixel along a circular path while preserving the image's overall shape, proportions, and orientation of detail — unlike flipping, nothing is mirrored, so text and asymmetric shapes keep their normal left-right and top-bottom reading direction, just turned. Rotation is one of the most fundamental image corrections: fixing a photo that was saved sideways or upside-down due to how a camera or phone recorded its orientation metadata, straightening a slightly tilted horizon, or deliberately angling a graphic element for a design layout.

How Browser-Based Image Rotation Works

This tool decodes your uploaded image and calculates the exact bounding-box dimensions a rotated version of it would need, using the standard formula for a rotated rectangle: the new width is the original width times the cosine of the angle plus the original height times the sine of the angle (with 180° and 270° angles have negative signs but absolute value handles this), and the new height follows the same pattern with sine and cosine swapped. It then creates a canvas at exactly that size, translates the drawing origin to the canvas's center, applies a rotation transform for the requested angle, and draws the original image centered at that rotated origin — a combination of standard, well-supported Canvas API operations (translate, rotate, drawImage) that together produce a rotated image with no clipped corners at any angle.

Why 90°-Multiple Rotations Are Special

Rotating by exactly 90°, 180°, or 270° is a special case where the rotated rectangle's bounding box aligns perfectly with pixel boundaries — a 90° or 270° rotation simply swaps width and height with no extra padding needed, and a 180° rotation keeps the same dimensions entirely. This is also why these specific angles produce zero resampling: every original pixel maps to exactly one new integer pixel position with no in-between blending required, unlike any other angle, where a rotated pixel grid no longer lines up with the new canvas's grid and the browser must interpolate color values along the rotated edges. This is precisely why the three preset buttons in this tool cover 90°, 180°, and 270° specifically — they're the only rotation angles that are always lossless and never require canvas enlargement beyond a simple dimension swap.

Straightening a Tilted Photo

One of the most common real-world uses for a custom rotation angle is correcting a photo where the horizon, a horizontal architectural line, or a standing subject is slightly tilted due to the camera not being perfectly level when the photo was taken. The correction angle needed is usually small — often somewhere between 1° and 10° — and getting it right typically takes a bit of trial and error: rotate by a small guessed amount, check the before/after preview against a known-horizontal or known-vertical reference line in the photo, and adjust the angle up or down until it looks level. Because this tool automatically enlarges the canvas to fit the full rotated image without clipping, you can freely experiment with the exact correction angle and always see the complete result, then crop away the resulting transparent or white corner triangles afterward with a dedicated crop tool once you've locked in the right angle.

FAQs

No. Rotation happens entirely inside your browser using the HTML Canvas API — your image is decoded locally, redrawn at the requested angle, and re-exported without any server-side component involved in processing it at any point. This means you can safely rotate personal photos, unreleased product shots, or confidential screenshots without any of the image data ever leaving your device or being logged anywhere. You can confirm this yourself by opening your browser's developer tools and watching the network tab while you use the tool — you won't see any outgoing requests carrying image data.

Rotating spins the entire image around its center point by a chosen angle, without mirroring anything — text and asymmetric details keep their original left-right and top-bottom orientation, just turned to a new angle. Flipping, by contrast, mirrors an image across an axis, which does change its 'handedness' (a mirrored letter looks backwards). A 180° rotation and a 'flip both' operation happen to look visually identical for that one specific case, but at any other angle the two operations produce genuinely different results. If you need to mirror an image left-right or top-to-bottom instead of turning it, use our dedicated Image Flipper tool (see Related Tools below).

For 90°, 180°, and 270° rotations, the output canvas is either the same size as the original or has its width and height simply swapped — no extra space is needed because the rotated image's edges still align with a rectangle of those exact dimensions. For any other angle, though, a rotated rectangle no longer fits inside a rectangle of the same size without clipping its corners, so this tool automatically calculates a larger bounding canvas — using the standard trigonometric formula for a rotated rectangle's bounding box — sized just large enough to contain the entire rotated image without cutting off any content. This is why, for example, rotating a 1000×600 image by 45° produces an output that's noticeably larger than 1000×600 in both dimensions.

Once the bounding canvas is enlarged to fit a non-90°-multiple rotation, the four corners of that canvas — outside the rotated image's actual boundary — need to be filled with something. For PNG and WebP output, those corners are left transparent, since both formats support an alpha channel and transparency is almost always the most useful default for further editing or compositing. For JPG output, which has no transparency support at all, those corners are filled with solid white instead, since an unfilled JPEG canvas would otherwise default to black, which looks like a rendering bug rather than an intentional choice.

For 90°, 180°, and 270° rotations, there's no resampling at all — every pixel moves to an exact new integer position with no interpolation needed, so the result is pixel-for-pixel as sharp as the original. For any other angle, the browser's rotation necessarily resamples pixels along non-axis-aligned edges (since a rotated grid of pixels doesn't align perfectly with the new canvas's grid), which can introduce very slight softening right at the image's rotated edges — this is an unavoidable, universal characteristic of non-90°-multiple rotation in any image editor, not a limitation specific to this tool. For JPG and WebP output, the tool also re-encodes at a high, visually lossless-feeling quality setting (92%) to avoid adding further compression artifacts on top.

The custom angle field accepts values from 0° to 360°; internally, any angle is normalized by taking it modulo 360 so that, for example, an angle of 450° behaves identically to 90°, since a full 360° rotation always returns an image to its starting orientation. If you specifically want a counter-clockwise rotation, use the 90° CCW preset button, or simply enter the clockwise-equivalent angle directly — for instance, a 30° counter-clockwise rotation is the same as a 330° clockwise rotation, since rotating clockwise by (360 − 30)° always produces the identical result to rotating counter-clockwise by 30°.

The rotated image keeps the same format as your original upload — a JPG stays a JPG, a PNG stays a PNG, and a WebP stays a WebP — since rotating only repositions pixel data, not the underlying file format or its encoding. If you need to convert to a different format as well as rotate, use one of our dedicated format converters (see Related Tools below) either before or after rotating.

Beyond the common case of fixing an accidentally sideways or upside-down photo (which only ever needs 90°, 180°, or 270°), arbitrary-angle rotation is genuinely useful for straightening a photo where the horizon or a straight architectural line is slightly tilted from an imperfectly level shot, creating a deliberately angled design element for a poster or social media graphic, or preparing a decorative asset that needs to sit at a specific angle within a larger composition. A perfectly level horizon typically only needs a small correction, often well under 10°, which is exactly the kind of precise adjustment the custom angle field is built for.

This tool focuses specifically on rotation, so it doesn't automatically crop the enlarged canvas back to a fixed size after a custom-angle rotation. If you need the result back at a specific size — for example, cropping away the transparent or white corners after straightening a tilted photo — download the rotated image here first, then upload that file into our dedicated Image Cropper tool (see Related Tools below) to trim it down to exactly the region you want.

There's no hard-coded limit in this tool, and the Canvas API handles reasonably large images efficiently in the browser. For an extremely large or high-resolution source image rotated at a non-90°-multiple angle, you may notice a brief moment of processing time while the browser computes the resampled, resized canvas — this is a normal, one-time cost tied to image size and angle, not an ongoing performance issue with the tool itself.

Related Tools

Image Rotator handles turning an image by any angle. These related image tools cover other common transformations you'll often need alongside rotation.

Image Flipper
ImageMirror an image horizontally or vertically — a different transformation from rotating.
Image Cropper
ImageCrop away the transparent or white corners left after a custom-angle rotation.
Image Resizer
ImageResize a rotated image to exact pixel dimensions.
Watermark Image
ImageAdd a text or logo watermark back onto an image after rotating.