Unicode Character Lookup

The tool iterates by Unicode code point rather than by UTF-16 unit, so an astral character like an emoji is a single entry even though it occupies two units, called a surrogate pair, inside a JavaScript string.

The code point is the abstract Unicode number for the character, shown as U+ hex and in decimal. The UTF-8 bytes are how that code point is actually stored on disk or sent over the network, which takes one to four bytes.

A base letter and a separate combining mark are shown as two rows because they are two code points. That mirrors how the text is stored. Note that a single precomposed é is one code point, while e plus a combining accent is two.

It uses the standard Unicode notation U+XXXX, padded to at least four hex digits, for example U+0041 for A and U+1F600 for a grinning face. Code points above the four-digit range simply use more digits.

It gives the numeric character reference, such as é for é, which you can paste directly into HTML to render that exact character regardless of the page encoding. The Copy HTML entities button concatenates them for a whole string.

No. It reports the numeric identifiers, code point, decimal, HTML entity and UTF-8 bytes, but not the descriptive Unicode name such as LATIN SMALL LETTER A. Pair it with a character-name database if you need the label.

Sequences joined with a zero-width joiner, such as some family or flag emoji, are stored as multiple code points and therefore appear as multiple rows. Each underlying code point is listed on its own line.

Yes. Copy code points joins every U+ value with spaces, and Copy HTML entities joins the &#...; references with no separator so they paste straight into markup.

Yes. Every character is analyzed in your browser and nothing is uploaded, so sensitive text never leaves your device.