Inspect character

List each Unicode code point with its hexadecimal label, UTF-8 bytes, index, and a deliberately small display classification.

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ToolCharacter Inspector
Input
Output
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How it works

JavaScript string iteration visits code points, TextEncoder produces RFC 3629 UTF-8 bytes, and a separate length field counts UTF-16 units. Hidden controls, U+FEFF, and U+200B print as U+ labels, while the type column covers selected ranges rather than the full Unicode property database.

  • Every code point receives a row because invisible formatting characters are often the object of the investigation.
  • The table index advances by code point, not by UTF-16 offset or grapheme cluster.

Worked example

Inspect Characters
Inspect each character in a short string with code points and UTF-8 bytes
Input
											ABC
Output
												=== Text Inspector ===
String length (UTF-16 units): 3
Code points: 3
UTF-8 byte length: 3

Idx | Char | Code Point       | UTF-8 Bytes      | Type
----|------|------------------|------------------|----
  0 | A    | U+0041           | 41               | Uppercase Letter
  1 | B    | U+0042           | 42               | Uppercase Letter
  2 | C    | U+0043           | 43               | Uppercase Letter

When to use this

Developers find zero-width spaces in identifiers, encoding lessons compare UTF-16 with UTF-8, and cleaning investigations locate C0 or C1 controls.

Edge cases

  • 😀 occupies one row and four UTF-8 bytes while increasing the separate UTF-16 length by two.
  • e followed by U+0301 occupies two rows even when a font renders the pair as one accented grapheme.
  • A family emoji is decomposed into emoji and U+200D rows instead of appearing as one user-perceived character.

References