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How to straighten a document photo on Mac

Use four-corner perspective correction to straighten a photographed document and compare the original with the adjusted image on Mac.

6 stepsUpdated Nov 12, 2026Get Image to PDF Export Studio
What you'll achieve
The selected photo has an applied perspective correction.
What you need
  • Image to PDF Export Studio on a Mac.
  • One or more existing photos of paperwork imported into a packet.
Before and after comparison of a photographed document with applied perspective correction on Mac.

Photos of invoices, forms, or receipts can be tilted or skewed. Image to PDF Export Studio lets you inspect those photos in a packet, adjust four perspective corners, and review the result before preparing the PDF.

  1. 1.Find the photo that needs review

    Import your document photos. In the packet, look for the Needs Review badge beside images requiring attention, and check the page order before opening one.

    Seven imported document photos in the packet, with a Needs Review badge on the selected photo.
    Seven imported document photos in the packet, with a Needs Review badge on the selected photo.

  2. 2.Open the photo review

    Click Review Issues to inspect a flagged photo. The Side by side comparison displays the original under Before and the current result under After.

    Side-by-side Before and After views of the uncorrected document photo.
    Side-by-side Before and After views of the uncorrected document photo.

  3. 3.Open the perspective correction tool

    Click Adjust Corners. Four blue handles appear around the image in the Before pane, while the After pane shows the prospective correction.

    Perspective correction mode showing four blue corner handles over the original photo.
    Perspective correction mode showing four blue corner handles over the original photo.

  4. 4.Adjust the upper two corners

    Drag the top-left and top-right blue handles toward the upper corners of the photographed page or region you want to straighten. Watch the After preview change.

    Upper blue handles moved inward, changing the preview perspective of the photo.
    Upper blue handles moved inward, changing the preview perspective of the photo.

  5. 5.Set the lower corners

    Move the bottom-right and bottom-left handles until all four points outline the area you want to correct. Check the After preview before accepting the crop and perspective.

    All four blue perspective handles positioned and the corrected crop preview visible.
    All four blue perspective handles positioned and the corrected crop preview visible.

  6. 6.Apply and inspect the corrected photo

    Click Apply Correction. If the review moves to another issue, use Previous Issue to return to this photo. Compare Before and After to confirm the correction was applied.

    Applied correction compared with the original image side by side in Image to PDF Export Studio.
    Applied correction compared with the original image side by side in Image to PDF Export Studio.

After the last step

The side-by-side review shows the original and adjusted images; PDF generation is a separate next step.

Tips

  • Use the side-by-side comparison to judge the correction before you apply it.

  • Place each handle near the corresponding corner of the content you want to preserve.

  • You can return to the corrected photo with Previous Issue if review advances automatically.

  • Watch outPerspective adjustment can crop outer parts of the original photo; inspect the After preview before applying.

  • Watch outLow-resolution or blurry source photos may still have limited readability after correction.

Guides for Image to PDF Export Studio