Use Set Corners to line up the detected outline with the real edges of the chart grid. Accurate corners help the following steps count and position every stitch correctly.

You reach this step by selecting a page on Chart Overview. When the outline matches the chart, select Next to continue to Confirm Size.

Set Corners at a Glance

What Everything Means

Set Corners screen: 1 chart outline and handles, 2 tool chip, 3 Back button, 4 Next button
  1. Chart outline and handles: Drag a corner handle onto each corner of the printed grid. You can also drag a side handle to move one complete edge, or drag inside the outline to move everything together.
  2. Tool chip: Undo a whole-outline move, change the corner mode or reload the page from its original PDF.
  3. Back: Return to Chart Overview.
  4. Next: Check the outline, straighten the chart if required and continue to Confirm Size.

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Choosing a Corner Mode

Bounding-box mode: 1 confirmation message, 2 corner-mode button, 3 rectangular outline
  1. Confirmation message: A short message confirms which mode you have selected.
  2. Corner-mode button: Select this button to switch modes. Its icon shows the mode you will switch to.
  3. Bounding-box outline: Use this mode when the chart needs a straight rectangular outline with no perspective tilt.
Freeform mode: This is the default. Move corners independently to match a skewed scan or photograph.

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The Tool Chip

Set Corners tool chip: 1 Undo and Redo, 2 corner mode, 3 Reload from PDF
  1. Undo and Redo: Undo appears after you drag the complete outline. Redo appears after an undo. Unavailable buttons stay hidden.
  2. Corner mode: Switch between freeform and bounding-box corner movement.
  3. Reload from PDF: Start again from the original PDF page with a newly detected outline. The app asks for confirmation first.
Outline N of M: If several possible chart outlines were detected, this additional button cycles through them. It is only shown when more than one outline is available.

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Fine-Tuning with the Magnifier

Magnifier showing a chart corner, purple nudge arrows and white jump pointers
Show the magnifier: Tap a corner or side handle. Tap the same handle again, or tap empty space, to close it.
Nudge precisely: Tap a magnifier arrow for a small adjustment. Double-tap an arrow for a movement five times larger.
Drag for fine control: Drag inside the magnifier to adjust the selected corner or side while keeping the exact grid intersection visible.
Jump between handles: Use the outer pointers to move directly to another corner or side. The chart pans to keep the selected handle in view.

Did you know?

  • Next checks your outline. Crossed or otherwise invalid corners cannot be carried into the next step.
  • Straightening is automatic. If the accepted outline is rotated or skewed, the chart image is straightened when you select Next.
  • Two charts on one page? Use the outline cycle button to pick the one you want instead of dragging corners across the page.
  • Older cropped pages are protected. The app offers to reload the original PDF before editing a page that was cropped in an older version.

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