About Flip Image

A horizontal flip reverses the picture along its vertical centre line — the left edge becomes the right edge, and the result is what you would see holding the photo up to a mirror. A vertical flip does the same along the horizontal centre line, tipping the image upside down. Ask for both and the two reflections compose into what looks like a 180° rotation.

Worth being precise about one thing: a flip is a reflection, not a rotation. Any text caught in a mirrored photo reads backwards afterwards. That is exactly what you want when you are correcting a front-camera selfie, which the phone mirrored on the way in — and exactly what you do not want if you were really after a rotation.

You can queue up to 30 files at a time. Each carries its own flip setting, so a batch can mix mirrored and upside-down results, and the output always comes back in the format that went in — JPG as JPG, PNG as PNG (alpha channel intact), WebP as WebP.

The whole thing is three browser calls, all of them local to your tab:

1. Your file is decoded into a bitmap in memory. It is read off your disk by the browser itself; no network request carries it anywhere.
2. That bitmap is painted onto a canvas through a scale transform — scale(-1, 1) to mirror, scale(1, -1) to turn it over — which walks the pixels in reverse along the axis you chose. Pixels get reordered, never invented or thrown away, so no detail is lost in the flip itself.
3. The canvas encodes the finished image back into its original format at high quality and hands you a download.

Skipping the server has a pleasant side effect: there is no upload to wait on, no queue behind other people's jobs, and no ceiling on file size other than what your own machine can hold. Once the page is cached, the tool keeps working with the connection off entirely.