Image Rotator & Flipper

The Image Rotator & Flipper turns, mirrors and straightens images right in your browser: quick 90° buttons for the common case of a sideways or upside-down photo, a fine-rotation slider for straightening a tilted horizon down to the exact degree, and horizontal/vertical flip toggles for mirroring — all with a live preview before you commit to a download.

Photos come out of phones and cameras sideways more often than you'd expect, especially when the device's orientation sensor doesn't quite catch up, and screenshots or scanned documents are routinely off by exactly 90° or 180°. For those, a single click on Rotate left or Rotate right fixes it instantly and losslessly, since a 90°-multiple rotation just repositions existing pixels with no interpolation needed. The fine-rotation slider covers the trickier case — a landscape photo with a slightly tilted horizon — by rotating to any arbitrary angle and automatically expanding the canvas so no corners get clipped off in the process.

Flipping (mirroring) is useful for a different set of problems: correcting a photo taken in a mirror or through a front-facing camera, or preparing an image for iron-on transfer printing, which requires a horizontally mirrored version. Both flip directions can be combined with any rotation angle, and the live preview updates instantly using CSS transforms so you can see exactly what you'll get before the final canvas render runs.

All transforms run locally on an HTML5 canvas — there's no server round-trip, so the preview is instant and your image is never uploaded. One detail worth knowing: rotating by an angle that isn't a multiple of 90° necessarily changes the output's pixel dimensions (the canvas has to grow to fit the tilted rectangle without clipping), and for JPEG output the newly exposed corner areas are filled solid white rather than left transparent, since JPEG has no alpha channel.