No. The inspector iterates over your string with the browser's own iterator and code point APIs. Nothing leaves your device.

Why does one emoji show as several code points?

Many emoji are sequences: a base symbol plus skin-tone or variation selectors, or several characters joined by a zero-width joiner (U+200D). The inspector lists each code point so you can see the full sequence.

What is the difference between a code point and a UTF-16 code unit?

A code point is the abstract Unicode value (up to U+10FFFF). UTF-16 stores values above U+FFFF as two 16-bit surrogate units, which is why JavaScript string length can exceed the number of visible characters.

What does the general category mean?

Unicode assigns each code point a two-letter category such as Lu (uppercase letter), Nd (decimal digit), Zs (space) or Cf (format control). It tells you the broad role of the character.

How is the Unicode block determined?

Each code point falls in a named range — Basic Latin, Cyrillic, Arabic, Emoji and so on. The tool maps the numeric value to its block using the standard Unicode block boundaries.

Unicode Character Inspector

See exactly what is in your text

Strings are not always what they look like. A “space” might be a non-breaking space, an “a” might be Cyrillic, and a single emoji can be five joined code points. This inspector iterates over a string by Unicode code point and shows, for every character, its U+XXXX value, decimal value, UTF-8 byte count, Unicode block, general category, and ready-to-paste HTML and JavaScript escapes. Everything runs locally in your browser.

How it works

The tool uses the string’s built-in iterator (for…of), which yields full code points rather than UTF-16 code units, so astral characters above U+FFFF are handled correctly. For each code point it computes the hex value with codePointAt, classifies the block by comparing the value against the standard Unicode block ranges (Basic Latin, Latin-1 Supplement, Cyrillic, Arabic, CJK, Emoji and more), and derives a general category using Unicode regular-expression property escapes (\p{Lu}, \p{Ll}, \p{Nd}, \p{Zs}, \p{Cf} and so on). UTF-8 byte length follows the standard ranges (1 byte below U+0080, 2 below U+0800, 3 below U+10000, 4 above). Escapes are built as &#xHEX; for HTML and \uXXXX / \u{XXXXXX} for JavaScript.

Example

Pasting the single visible emoji ”👍🏽” reveals two code points: U+1F44D (thumbs-up sign) followed by U+1F3FD (a medium skin-tone modifier). Pasting café where the é is decomposed shows e (U+0065) followed by a combining acute accent (U+0301) — invaluable when text comparisons mysteriously fail.

Tips and notes

If your JavaScript string length is larger than the visible character count, you have astral characters using surrogate pairs.
A trailing U+FE0F (variation selector-16) forces emoji presentation of an otherwise text-style symbol.