Flipping is a mirror reflection, not a rotation. A horizontal flip swaps left and right the way a mirror on a wall does, keeping the top of the image at the top, while a vertical flip swaps top and bottom the way a reflection in still water does. Both keep every pixel's colour and detail exactly as it was, they simply reposition where each pixel sits relative to the centre line.
Everything runs locally. The source file is decoded by the browser, redrawn onto a canvas with a single negative scale transform applied, and re encoded on your device, so a private photo stays private throughout the whole process.
When you need to flip an image
A front facing camera, the kind used for a selfie or a video call, usually captures a mirrored view of what it sees, so text or logos in the background often come out backwards in the saved photo. Using an image flipper to flip image horizontally corrects that, turning the reversed text back the right way round.
Flipping is also a deliberate design choice, not just a correction. Mirroring a photo of a person can change which way they appear to be facing, which matters when placing them next to text that should read as though they are looking toward it. A scanned image can occasionally come out upside down or reversed depending on how it was fed into the scanner, and a vertical flip fixes an upside down scan just as a rotation would, though rotation is usually the better fix for a scan that is fully inverted rather than mirrored.
- Flip horizontally to correct a selfie or front camera photo where text appears backwards.
- Flip horizontally to change which direction a subject appears to be facing next to text.
- Flip vertically to correct a scanned image that came out reflected top to bottom.
- Use a rotation instead of a flip when an image is simply upside down rather than mirrored.
- Combine a flip with a crop when mirroring reveals that the composition also needs reframing.
Horizontal flip versus vertical flip
A horizontal flip mirrors the image left to right around a vertical centre line, which is the more commonly needed direction since it corrects the mirrored view a front facing camera produces and is also the standard way to change which direction a subject faces in a composition.
A vertical flip mirrors the image top to bottom around a horizontal centre line. This is used far less often in everyday photo editing, but it comes up for correcting certain scanner or capture orientations, and occasionally as a deliberate creative effect, such as a reflection composited beneath an object. Choosing when to flip photo vertically instead of horizontally comes down entirely to which edge the mirroring needs to happen across.
What flipping does not change
A flip never rotates, resizes or recolours anything. The dimensions of the output are identical to the input, every pixel keeps its original colour, and no detail is added or lost. This makes flipping a completely lossless operation regardless of how many times you apply it, since flipping an image twice in the same direction simply returns it to the original arrangement.
If an image has legible text in it, remember that flipping mirrors that text too, turning it backwards. That is expected when the goal is correcting an already mirrored photo, but it is worth checking the result before flipping a photo that has readable text you want to keep legible.
How this image flipper works under the hood
The tool applies a canvas transform before drawing the image: a horizontal flip scales the drawing context by negative one on the x axis, and a vertical flip does the same on the y axis, then the image is drawn as normal onto that mirrored coordinate system. That single transform is what produces the reflected result without any per pixel manipulation.
Because this happens entirely with canvas primitives built into the browser, there is no upload involved and no server side processing step, which you can confirm by checking your browser's network panel while the image is flipped. There is also no limit on file size beyond what your device's own memory can handle.
How to flip an image
- 1
Add your photo
Drag an image onto the drop area, or click it to choose a file. Nothing is uploaded.
- 2
Choose a flip direction
Select horizontal to mirror left and right, or vertical to mirror top and bottom.
- 3
Check the preview
Confirm the flipped orientation looks right, and flip again to reverse it if needed.
- 4
Download the result
Press flip, then download the mirrored image once it looks correct.
Related tools worth bookmarking
Sources and further reading
- MDN: CanvasRenderingContext2D.scaleThe canvas transform this flipper uses, applying a negative scale factor to mirror the drawing coordinate system.developer.mozilla.org
- WHATWG: Canvas transformationsThe living standard section defining how scale, rotate and translate transforms combine on a canvas context.html.spec.whatwg.org
Frequently asked questions
Common questions about the image flipper.
No. A flip only repositions pixels relative to the centre line, it never resamples, recolours or discards any detail. The output has exactly the same dimensions and pixel quality as the original, no matter how many times you flip it.
Flipping mirrors an image, swapping left and right or top and bottom while keeping everything else in place, similar to a reflection. Rotating spins the whole image around a centre point by an angle. An upside down photo needs a 180 degree rotation, while a mirrored or backwards photo needs a flip.
A flip mirrors everything in the image, including any text, so readable text becomes backwards after a horizontal or vertical flip. This is expected and is exactly what corrects a selfie where background text was already mirrored by a front facing camera.
No. The flip is applied using a canvas transform running entirely in your browser. Your photo is never transmitted to a server, which you can confirm by checking your browser's network panel while the flip is applied.
Yes. Apply a horizontal flip and a vertical flip in sequence to mirror an image in both directions, which produces the same visual result as rotating the image by 180 degrees, since the two flips combined reverse both axes at once.
Yes. This image flipper processes every file locally in your browser using a canvas transform, so a private or unpublished photo never leaves your device. There is no upload step at any point, which you can confirm by watching your browser's network panel while you flip a file.
By default the flipped image keeps your original format, whether PNG, JPG or WebP. You can also choose to export as PNG or JPG regardless of the source format if you want to standardise on one output type while you flip.