Flip Image Vertically
Flip Image Vertically reverses y coordinates so the top becomes bottom while left and right remain. It translates by image height, applies a −1 y scale, and renders a new PNG. The operation turns scenes upside down through reflection and is not equivalent to a 180° rotation.
Runs locally — files stay on your deviceHow does vertical flip differ from 180° rotation?
Vertical flip reverses only top and bottom; 180° rotation reverses both axes.
Vertical reflection reverses the y axis
The canvas transformation maps each source row to the corresponding row measured from the opposite edge.
How it works
The browser keeps source dimensions, applies the vertical reflection transform, draws the bitmap, and downloads PNG.
Key concepts
Left and right remain
Only vertical order changes.
Pixel output is regenerated
Original file structure and metadata are not carried.
When to use it
- Correct a vertically mirrored capture.
- Create a reflection effect.
- Test upside-down layout variants.
When not to use it
- Do not substitute it for 180° rotation.
- Do not expect partial-region flipping.
- Do not use without checking directional meaning.
Worked examples
Landscape
- Input
Sky above ground- Expected output
Ground above sky
Rows reverse.
Text
- Input
A sign- Expected output
Vertically reflected lettering
The result is not normally readable.
Two flips
- Input
Vertical flip applied twice- Expected output
Original pixel orientation in principle
Each export still re-encodes PNG.
Common mistakes
Expecting rotation
One axis is reflected. Correction: Use 180° rotation when both axes should turn.
Forgetting labels
Letters and icons invert vertically. Correction: Review semantic content.
Expecting metadata retention
Canvas export writes a new file. Correction: Keep a metadata-bearing source.
Best practices
- Compare against the intended orientation.
- Review all symbols.
- Retain the original.
Related operations and differences
Flip Image Horizontally
Choose Flip Image Horizontally when you need to mirror an image from left to right.; use Flip Image Vertically specifically for flip vertical.
Add Text Watermark to Image
Choose Add Text Watermark to Image when you need to place a text watermark in the lower-right corner.; use Flip Image Vertically specifically for flip vertical.
Image Compressor
Choose Image Compressor when you need to reduce image file size with adjustable quality.; use Flip Image Vertically specifically for flip vertical.
Image Resizer
Choose Image Resizer when you need to resize images to exact dimensions locally.; use Flip Image Vertically specifically for flip vertical.
Adjust Image Brightness
Choose Adjust Image Brightness when you need to increase or decrease image brightness.; use Flip Image Vertically specifically for flip vertical.
Adjust Image Contrast
Choose Adjust Image Contrast when you need to increase or decrease image contrast.; use Flip Image Vertically specifically for flip vertical.
Limitations and privacy
- Whole-image vertical reflection only.
- No region, format, metadata, or background controls.
- PNG output.
Selected images are decoded and processed locally in this browser.
Frequently asked questions
Does left become right?
No.
Is it 180° rotation?
No.
Are dimensions preserved?
Yes.
Is output PNG?
Yes.