Rotate & Flip Image

This tool rotates and flips PNG, JPG, WebP, GIF, BMP and AVIF images in your browser: 90° left or right, 180°, a horizontal mirror, a vertical flip, any combination of those, and an optional straightening angle between −45° and 45°. It is for fixing a sideways phone photo or scan, mirroring a selfie or a design, or levelling a tilted horizon, for up to 50 images at once, without uploading them anywhere.

Click Rotate left, Rotate right, Flip horizontal and Flip vertical in any order; the preview shows the first image and the line beside the buttons says what the result is. However many clicks you make, they always add up to one of eight orientations — the four rotations, with or without a mirror — so a file is transformed once, not step by step. For example, Rotate right followed by Flip horizontal gives the same picture as Flip horizontal followed by Rotate left. A 90° turn swaps the sides: a 4032 × 3024 photo becomes 3024 × 4032.

Straightening ("Straighten °") rotates by any angle up to 45° either way, positive meaning clockwise. The canvas grows so that no corner is cut off — a 1000 × 500 image at 10° needs 1072 × 667 px — and the new corners are transparent or filled with a colour you pick. A transparent result from a JPG is saved as PNG for "Same as input", because JPG cannot store transparency. Straightening resamples the pixels with the browser's high-quality smoothing, so edges soften slightly; 90° turns and flips only move whole pixels and do not.

How it works: your browser decodes each image with its own codecs, applying the photo's EXIF orientation first, so what you rotate is the upright picture you see in the preview. All the steps are combined into one transformation matrix, and the image is drawn once onto a canvas of the output size and encoded. The output has no orientation tag (no EXIF at all), so every app shows it the same way — the common "it looks right on my phone but sideways on my computer" problem does not carry over.

What is kept and lost: PNG output is lossless; JPG and WebP output is re-compressed at the quality you set (92 by default), so a rotated JPG is not bit-for-bit lossless the way specialised JPEG tools can be. GIF, BMP and AVIF are saved as PNG for "Same as input", and an animated GIF keeps only its first frame. EXIF metadata such as camera, date and GPS location is dropped.

Limits: 50 images, up to 50 MB each, and an output of at most 16,384 px per side and 100 megapixels. iPhones and iPads allow canvases of only about 16.7 megapixels, so very large photos may fail there with a message saying so.

Your images stay on your device: they are read into the page's memory, transformed there and offered back as downloads. You can check in the Network tab of your browser's developer tools that no request carries your files.

1. Each file's size is checked (50 MB) before it is read, and its first bytes are checked to confirm it is PNG, JPG, WebP, GIF, BMP or AVIF. 2. The clicks are combined into one orientation: an optional mirror (left↔right) followed by 0–3 clockwise quarter turns. A turn adds 1; a horizontal flip turns t into −t and toggles the mirror; a vertical flip turns t into 2 − t and toggles the mirror (all modulo 4). 3. The browser decodes the image with EXIF orientation applied. A source pixel (x, y) of a w × h image lands, after the mirror x → w − 1 − x, and after each quarter turn of a W × H grid at (H − 1 − y, x). 4. For a straightening angle θ the output canvas is ⌈W·|cos θ| + H·|sin θ|⌉ × ⌈W·|sin θ| + H·|cos θ|⌉ and the image is rotated about its centre. 5. One matrix combining these steps is set on a canvas of the output size, the corners are filled if a colour is chosen, the image is drawn once (smoothing only for a straightening angle) and encoded, named like photo-rotated.jpg.