SMALL TOOLBOX · Document Perspective Corrector
Document Perspective Corrector
Straighten photographed paper by positioning four corners and export a cleaned PNG.
Inputs and settings
Straighten photographed paper by positioning four corners and export a cleaned PNG.
Details and next steps
Results and preview
Enter the details and run the tool.
Instructions and important notes
Blurry images, folded pages and unreadable details cannot be reconstructed. Thresholding can erase faint text.
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Who should use this tool?
Straighten photographed paper by positioning four corners and export a cleaned PNG.
Before you begin
Upload a photo, drag the four corners to the paper edges, pick color or grayscale output and apply correction.
Step-by-step instructions
- Prepare the supported inputs described above. Keep original files as a backup.
- Use the tool controls to process the information. Review any on-screen warnings before proceeding.
- Inspect the generated output against your input before downloading or printing.
What will you receive?
A new rectified PNG image of the selected document region.
Limitations and incorrect-result cases
Blurry images, folded pages and unreadable details cannot be reconstructed. Thresholding can erase faint text.
Questions about your data
Are my files sent to a server?
File-processing calculations run in this browser. Hosting, fonts, analytics scripts and optional third-party libraries may still make network requests. Read our privacy policy for details.
Should I trust the output without checking?
No. Compare important results with the original and use a professional check where legally or technically required.