How to use Image Perspective Warp
- Upload a supported image and choose the output size.
- Enter four valid corners in the documented order.
- Inspect the transformed image and outside fill before saving.
Example: Image Perspective Warp
A local worked example using the inputs and settings below for image perspective warp.
You add
Image: ["sample.png (348 bytes)"]
Source corners: x,y percentages: "0,0\n100,0\n100,100\n0,100"
Output width (px): "80"
Output height (px): "60"
Pixels outside the source image: "transparent"
You get
Mapped the selected quadrilateral to a 80 by 60 PNG.
perspective-warp.png (80 × 60 pixels)
Options
- Four corners
- Enter the ordered corners of a stable convex quadrilateral. Invalid or nearly degenerate geometry is refused.
- Outside fill
- Choose the color or transparency for output locations outside the mapped source. Output dimensions define the sampling grid.
Supported inputs and limits
JPEG, PNG or WebP, 64 MiB and 24 megapixels; output up to 2 megapixels and 2,048 pixels per side. Four corners must form a stable convex quadrilateral. Inverse homography uses bilinear premultiplied-alpha sampling and chosen outside fill. It cannot recover hidden detail.
Where your input is processed
This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.
Resampling can soften edges
The inverse homography samples decoded pixels under the stated alpha policy. It cannot reveal content outside the source image or restore hidden detail. Inspect thin lines and uncovered regions in the exported PNG.
Questions about Image Perspective Warp
What order should the corners use?
Use the displayed order around the image boundary. Crossing that order produces an invalid quadrilateral.
Can a warp recover hidden pixels?
No. It resamples the supplied picture only.
Why can details become softer?
Perspective sampling changes pixel coverage. Review small text and edges in the actual output.