Exhaustive Homoglyph Detector (Letters Safe + Validity Checks)
Domain or URL
Tip: You can also pass
?domain=…
in the page URL.
Scan
Copy link
Clear
What this checks
IDN:
Punycode (
xn--
) decoded to Unicode labels.
Normalization:
NFKC + combining marks stripped.
Confusables:
Extensive Unicode→ASCII mapping for Latin lookalikes (Greek/Cyrillic, Fullwidth, Math Alphanumerics, etc.).
Script checks:
Mixed-script labels and whole-script confusables flagged.
Letter-safety:
Genuine ASCII letters aren’t flagged; digits/symbols & non-ASCII lookalikes are.
Validity:
TLD checked against IANA; URL parsed with browser + rules.
Client-side only. TLD list fetched from IANA; if it fails, TLD check is skipped with a warning.