Turn an image by 90, 180 or 270 degrees and mirror it horizontally or vertically. Right angle turns do not resample, so nothing is softened.
The conversion runs entirely in your browser. Your files stay on your device from start to finish, there is no server copy, and nothing is stored once you leave the page. That is true for every tool on FileFlip.
A photo that came out sideways is usually a photo whose orientation tag was lost somewhere along the way. Rotating it by a quarter turn fixes it permanently, in the pixels rather than in metadata that the next program may ignore. Mirroring is the other half of this tool: useful for scans that came through the wrong way round, and for photos taken with a front camera that flipped the image.
One or many. Batches are common here, because a whole folder from one camera is usually wrong in the same direction.
Rotation is clockwise. A photo lying on its right side needs 270 degrees, one lying on its left needs 90.
Mirroring happens in the finished image's own axes, so left to right means left to right on the picture you end up looking at, whatever rotation you also picked.
Pick the output format, then take the files one by one or as a zip.
Only right angles are offered, because those move every pixel to an exact new position. An arbitrary angle would have to invent pixels in between and would soften the whole image.
The geometry is exact, but JPG and WebP still re-encode the result. Saving as PNG keeps the pixels identical to the original ones.
The output is written the way it looks, with no rotation metadata. That is the point: every viewer, printer and upload form will now agree on which way up it is.