The mushaf
The Arabic Quran text belongs to the Tanzil Project.
The text on this site is the verified Uthmani copy from tanzil.net, shown without any change.
Tanzil Quran Text. Copyright (C) 2007–2021 Tanzil Project. License: Creative Commons Attribution 3.0.
The text may be copied as it is. Changing it is not allowed.
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.
That mushaf permission does not cover translations, published tafsirs, or audio recordings.
Updates are listed at tanzil.net/updates.