Old sheet shown in red, new sheet in green, unchanged lines fall to black. No alignment is performed — pages overlay at the same position, so this works best when both sets share the same page size and origin.
No file selected
No file selected
Sheet size is preserved exactly — this only changes sharpness.
Thickens hairline CAD strokes by ~1px so color reads clearly.
Only in old sheet
Only in new sheet
Present in both (unchanged)
Upload both PDFs and click Compare to see a preview here.