Staaarter

JPG Vertical Flipper

Uploads a JPG and mirrors it across its horizontal center axis, flipping every row of pixels top-to-bottom while keeping the image's original dimensions unchanged, then lets you download the flipped JPEG. A free online tool from Staaarter, right in your browser.

Runs locallyUpdated 2026-07-29
By Staaarter Team
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Overview

Introduction

This tool flips a JPG top-to-bottom, entirely in your browser, with no server upload involved.

It's a pure pixel-row reversal, so the result is a perfect vertical mirror with no quality loss beyond normal JPEG re-encoding.

What Is JPG Vertical Flipper?

A client-side JPG vertical-mirror tool that reverses the order of an uploaded image's pixel rows, so the top row becomes the bottom row and vice versa.

It's the counterpart to the horizontal flipper, which mirrors left-to-right instead of top-to-bottom.

How JPG Vertical Flipper Works

For every pixel at row y, the tool copies its color into row (height - 1 - y) of the output, leaving the column position unchanged.

Because it's a direct copy with no interpolation, there's no blur or artifact introduced by the flip itself.

When To Use JPG Vertical Flipper

Use it to correct an upside-down photo, create a reflected/mirrored graphic effect, or prepare a symmetric design element.

It's often combined with the horizontal flipper or a rotation to reach a specific final orientation.

Often used alongside PNG Vertically Flipper, JPG Horizontal Flipper and JPG Orientation Changer.

Features

Advantages

  • Runs entirely client-side; nothing is uploaded to a server.
  • Lossless pixel rearrangement with no resampling artifacts.
  • Instant, one-click operation with no parameters to configure.

Limitations

  • Only flips top-to-bottom; for a left-right mirror use the horizontal flipper instead.
  • Doesn't correct camera-sourced EXIF orientation metadata automatically; this performs a genuine pixel flip regardless of any embedded orientation tag.

Examples

Fix an upside-down scan

Input

An upside-down 1000x1400 JPG

Output

The same 1000x1400 JPG right-side up

A common fix for a scanner or camera that captured the page inverted.

Create a mirrored reflection graphic

Input

A 600x400 JPG of a landscape

Output

A vertically mirrored 600x400 JPG

Useful as the 'reflection' half of a symmetric water-reflection style graphic.

Best Practices & Notes

Best Practices

  • Combine with the horizontal flipper if you need a full 180-degree mirror rather than just top-to-bottom.
  • Check whether your image actually needs a flip versus a rotation: they produce visually different results.

Developer Notes

flipJpgVertically mirrors the equivalent PNG-category vertical flipper exactly, just against the jpg PixelBuffer/JpgToolResult types: a single pass copying each source row into its mirrored output row via the shared getPixel/setPixel helpers.

JPG Vertical Flipper Use Cases

  • Correcting an accidentally upside-down photo or scan
  • Creating a mirrored reflection effect for a design
  • Combining with a horizontal flip to achieve a full 180-degree mirror

Common Mistakes

  • Confusing a vertical flip with a 180-degree rotation: a flip alone doesn't also mirror left-to-right.
  • Expecting this to read and correct EXIF orientation tags automatically; it performs a direct pixel flip regardless of metadata.

Tips

  • If you need a true upside-down rotation (both axes mirrored), use the rotator tool at 180 degrees instead.
  • Pair with the horizontal flipper for creative kaleidoscope-style effects.

References

Frequently Asked Questions