Combining Mark Inspector
Inspect characters that are built from a base letter plus one or more combining accents or modifiers. The tool separates every code point, labels combining marks, and compares common Unicode normalization forms.
Normalization forms
Why visually identical text can differ
An accented character may be stored as one precomposed code point or as a base character followed by a combining mark. The forms can look identical but produce different byte sequences, string lengths, and search behavior.