The text
The Arabic Quran text belongs to the Tanzil Project.
The text on the site is the verified Uthmani copy at tanzil.net, shown unchanged.
Tanzil Quran Text. Copyright (C) 2007–2021 Tanzil Project. License: Creative Commons Attribution 3.0.
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This Uthmani text matches the Madinah mushaf.
The King Fahd Complex publishes the Madinah mushaf.
Tanzil’s digital text follows that same mushaf, so the source is the same.
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