The short answer
Why use Perspective Crop?
A photo of a page taken at an angle is hard to read and prints crooked. Flattening it squares the text to the edges, so it reads like a scan and goes into a PDF or an email looking tidy.
Four corner dots start near the corners of the photo. Drag each one onto a corner of the page, whiteboard, or screen, or type the positions as percentages of the image width and height. The tool maps that four-sided area onto a flat rectangle and saves it as a PNG.
Leave the output width and height empty and the size is taken from the average length of the opposite edges as they appear in the photo. When the page was shot at a steep angle, the far edge looks short, so the result can come out squashed. For a known paper size, type its proportions instead: 2100 × 2970 for A4, or 2550 × 3300 for US Letter.
Perspective, in the Transform tools, does the opposite job: it narrows the top or bottom of a flat image so it looks tilted away from you. Use Perspective Crop to remove an angle, and Perspective to add one.
Where Perspective Crop fits
Documents
Flatten a photo of a receipt or form so it reads like a scan.
Whiteboards
Square up a photo of a whiteboard after a meeting so the notes are readable.
Screens and signs
Flatten a photo of a monitor, a menu, or a sign you could only shoot from the side.
Start to finish
How to use Perspective Crop
- 01Tap Choose image and pick the photo of the page or screen.
- 02Drag each of the four corner dots onto a corner of the page. On a phone, you can also type exact corner percentages in the settings below the preview.
- 03Set the output width and height if you need a certain size, tap Apply changes, then tap Download result.
What to expect from Perspective Crop
| Check | What it means here |
|---|---|
| Supported input | JPEG, PNG, WebP, GIF, BMP, SVG and browser-supported AVIF images |
| Main controls | Crop frame position and size, plus output width and height |
| Output | PNG, with transparent corners for shaped crops |
| Working limit | 50 MB and 50 megapixels per image |
Perspective Crop tips
- Shoot the page with all four corners in the picture.
- Type 2100 × 2970 for an A4 page so it keeps its shape.
- If the result looks twisted, two corners are swapped.
- Even light matters more than the angle; shadows stay in the result.
Perspective Crop FAQ
Something missing? Ask us.
What order do the corners go in?
Can Perspective Crop fix a tilted photo that is already flat?
Does Perspective Crop upload my file?
Is Perspective Crop free to use?
Why did Perspective Crop fail or look wrong?
Related tools
More in Crop & Shape.