Perspective document scanner

Mark the four corners of a document photo and export a straightened image.

On your device · No account

Privacy details

Perspective document scanner processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Choose an image

Corners: X,Y pairs separated by semicolons

Output dimensions

Width (pixels)

Height (pixels)

Your preview

Preparing preview…

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-19

Using the perspective document scanner

Enter the corners in clockwise order: top-left, top-right, bottom-right and bottom-left. A projective transform maps that outline to your chosen output rectangle. The result is an image, not OCR text or a PDF.

Next: Color picker from image

A worked example

The sample corners 0,0; 639,0; 639,359; 0,359 describe the whole example and keep it rectangular at 640 × 360.

Before you use the result

Corners are set manually; no edge detection or text recognition is performed. Output is limited to two million pixels for responsive local processing. Choose dimensions that match the document’s proportions.

Next: Image resizer

Cite this page

Citation style

ToolOctopus. “Perspective document scanner.” Updated 2026-09-19. https://tooloctopus.com/perspective-document-scanner.

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