Rotate & Flip Image (Any Angle)

About the Rotate & Flip Image (Any Angle)

Turn a picture by exactly the angle it needs. Use the fine slider (0.1° steps) or type any angle; or select Straighten and drag along the horizon, a table edge or a wall — the photo turns so that line becomes level (or upright). A rotated photo leaves empty corners, so choose how to handle them: crop to the largest picture with the original proportions, crop to the largest area, or expand the canvas and fill the corners with a colour or transparency.

The usual 90° turns, 180° and mirroring work on many photos at once: each photo keeps its own setting, or use one rotation for all and download a ZIP. For JPG photos turned in 90° steps there is a lossless option that only changes the EXIF Orientation tag, so the picture is not recompressed. Photos that phones store sideways (shown upright through that tag) are opened upright and saved upright, so they look right in every app. Everything runs in your browser; nothing is uploaded.

Common uses

• Straightening a tilted horizon, building or document photo.
• Fixing phone photos that appear sideways after uploading them somewhere.
• Turning a batch of scans or screenshots by 90° or 180°.
• Mirroring a selfie or a design, or making a rotated graphic with a transparent background.

Cropping or expanding after rotation

Turning a W × H picture by an angle θ makes it cover a larger, tilted area, so an upright frame either leaves empty triangles in the corners or has to be cropped.

• Expand canvas keeps every pixel: the result is W·|cos θ| + H·|sin θ| wide and W·|sin θ| + H·|cos θ| high, with the corners transparent (PNG, WebP) or filled with your colour.
• Crop (same proportions) keeps the original shape. The largest centred frame of the same proportions that fits is scaled by k = min(W ÷ (W·cos θ + H·sin θ), H ÷ (W·sin θ + H·cos θ)).
• Crop (largest area) keeps the most picture, in a slightly different shape — useful when the exact proportions do not matter.

The line under the preview shows the result size and how much of the picture the crop keeps.

Lossless rotation and the EXIF Orientation tag

Cameras and phones often save photos as the sensor saw them and add an Orientation tag (EXIF tag 0x0112, defined in the CIPA DC-008 Exif standard) that tells viewers how to turn them: 1 is upright, 3 upside down, 6 and 8 sideways, and 2, 4, 5 and 7 add mirroring. Browsers and most apps follow it, which is why a photo can look right on your phone but sideways on a site that ignores it.

Lossless for JPG changes only that tag — combining your turn with the one the photo already has — so the JPG data stays bit-for-bit the same and other metadata is kept. It works for 90° steps and mirroring. Without it, the photo is drawn upright and saved fresh with orientation 1 (and no EXIF metadata), which every program shows correctly.

Limitations

• Up to 100 photos at a time. Results larger than browsers can create (16,384 px on a side, about 67 megapixels) are scaled down, with a note.
• Any-angle rotation recompresses the picture (JPG and WebP at the quality you set); only 90° steps and mirroring of JPGs can be lossless.
• Lossless rotation depends on the viewer honouring the EXIF Orientation tag; some older programs and some websites ignore it.
• GIF animations keep only their first frame here — use the GIF Resizer to rotate animated GIFs.
• Saving without the lossless option removes EXIF metadata such as camera details and GPS location.

Privacy

Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.