Text Inspector shows the code points that make up a text and their names

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View the site locally

python3 -m http.server

Look at the source data

curl https://www.unicode.org/Public/UCD/latest/ucd/NamesList.txt | less

Update the data in codepoint-names.js

pip install requests
python update_codepoint_names.py

Check which code points are missing

node

.load codepoint-names.js
for (let x = 0; x < 0x110000; x++) { if (!NAMES[x]) { console.log(x.toString(16)) } }