Every free image tool seems to begin with the same trade: upload a file, trust that it will be deleted later, and wait for a result to come back. That is a poor fit for a simple left-to-right or top-to-bottom flip—especially for a personal photo, a client asset, or an unreleased design.
FlipImage takes a different route. The image is decoded, drawn, flipped, and exported in the browser. The product still loads normal web assets and uses standard traffic analytics, but the image bytes themselves are not sent to a server.
Here is what that means in practice, including the limits that matter.
A Flip Is a Coordinate Transform
Horizontal flipping moves the drawing origin to the right edge and reverses the x-axis. Vertical flipping does the same on the y-axis. The actual Canvas code is small:
canvas.width = img.naturalWidth;
canvas.height = img.naturalHeight;
ctx.save();
if (flipH) {
ctx.translate(canvas.width, 0);
ctx.scale(-1, 1);
}
if (flipV) {
ctx.translate(0, canvas.height);
ctx.scale(1, -1);
}
ctx.drawImage(img, 0, 0);
ctx.restore();
When both switches are on, both axes are reversed. That produces a 180-degree turn. There is no separate 90-degree rotation control.
There Is a Hard File Size Limit, and It Says So
Files larger than 30 MB are rejected before processing starts, with a message that explains why. Nothing is silently downscaled: if a file is too large, you find out immediately rather than downloading a smaller image than the one you picked.
Thirty megabytes is generous for many phone photos and screenshots, but it will not accept every very large raster export. If you hit the limit, resize the image once before flipping it.
Transparency Has to Survive the Round Trip
Transparency is part of the pixel data. When a transparent PNG is drawn onto a Canvas and exported as PNG, its alpha channel is retained. Export it as JPEG, and transparency would have nowhere to go.
Output Format Depends on the Input, and Only JPEG Gets Quality Tuning
The re-encode is not one-size-fits-all:
- JPEG input is re-encoded as JPEG at quality 0.92.
- PNG, WebP, BMP, and GIF input are exported as static PNG. PNG preserves transparency and does not introduce another lossy compression pass.
The extension you download can therefore differ from the extension you uploaded.
Animated GIFs Come Out as Still Images
Canvas output is a single still image. A GIF that goes in as an animation comes out as a static PNG; the app does not process every frame or rebuild an animated file.
If you need to flip an animated GIF while keeping it animated, use an animation editor. FlipImage is built for still-image edits.
What It Does Not Do
- No arbitrary-angle rotation. There is no 90-degree control. Horizontal and vertical flips together produce a 180-degree turn.
- No batch processing or API. Images are handled one at a time in the browser.
- No extra EXIF orientation handling. The app uses browser-decoded image pixels and does not parse or correct EXIF orientation metadata in a separate step.
- No cloud history or cross-device sync. The edited image remains local to the device that created it.
Why Client-Side Processing Is the Right Default Here
Your image bytes never leave your device. Canvas work happens in the browser's memory, with no upload request carrying the image to FlipImage. You can verify that in DevTools: open the Network panel, flip an image, and inspect the requests—none contains the image file.
There is no per-image upload or storage cost. Because an edit does not send the image to a server or keep it in cloud storage, the free tool can stay useful. It still has a 30 MB processing limit, and free downloads include a watermark.
There is no image-processing round trip. The result is limited by the device's browser and CPU instead of the upload speed of the connection.
Try It
Open the image flipper, add an image, choose Flip Horizontal or Flip Vertical, and download the result. Free downloads include a small watermark; a one-time $6.90 upgrade removes it.
For a left-to-right reflection, see how to mirror an image online. For a short practical walkthrough on any device, read how to flip an image online for free.
FAQ
Are images uploaded when I use FlipImage?
No. The image is decoded, flipped, and exported in your browser. FlipImage does not send your image bytes to its servers.
What is the maximum image file size?
FlipImage rejects image files larger than 30 MB before processing starts. It does not silently downscale them.
Which output formats does FlipImage create?
JPEG input is exported as JPEG at quality 0.92. PNG, WebP, BMP, and GIF input is exported as a static PNG.
Can FlipImage keep an animated GIF animated?
No. Canvas output is a single still image, so animated GIF input is downloaded as a static PNG.
Can FlipImage rotate an image by 90 degrees?
No. It supports horizontal and vertical flips. Enabling both flips produces a 180-degree turn.
Does FlipImage apply extra EXIF orientation handling?
No. It uses the browser-decoded image and does not parse or correct EXIF orientation metadata in a separate step.
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