Random Unicode Test String Generator
Generates a random test string mixing characters from several real Unicode blocks — Latin accents, Greek, Cyrillic, Hiragana and emoji — for testing Unicode handling.
What this generator does
Produces a string containing characters from beyond the ASCII range — accents, scripts and symbols — for testing encoding, storage, collation and rendering.
How to use this tool
- Press generate for a random Unicode test string.
Worked examples
- Use
- Checking that a field, a database column or a font stack copes with non-Latin text
Common use cases
- Testing Unicode/emoji handling in input fields
- Internationalisation (i18n) testing
- Sample data for encoding tests
How this generator works
A string is assembled from the character classes that break text handling in different ways: characters outside the basic plane that need two UTF-16 units, combining marks that attach to the character before them, right-to-left marks that change how a line is laid out, and emoji built from several code points joined together. Each class fails differently, which is why they are drawn separately rather than mixed at random.
Limitations and good to know
- Some characters may render as a fallback box depending on the fonts installed. That is a display limitation of the viewing device, not a fault in the string.
- These strings are designed to be awkward. Pasting one somewhere real can produce mangled display, mis-sorted lists or a truncation in the middle of a character.
- Length in characters, code points and bytes are three different numbers here, and code that confuses them is what these strings find.
- Right-to-left marks affect the display of surrounding text, including text this page did not produce.