Why this tool is useful
Use class filtering to build test strings, strip punctuation for comparison or isolate numbers without relying on English-only regular expressions.
Text & List Tools · runs locally
Unicode Character Class Filter
Keep or remove Unicode letters, numbers, whitespace, punctuation, symbols, ASCII or non-ASCII characters with one explicit classification rule.
Ready. Your working data stays in this browser.
How it works
Every Unicode code point is tested against the selected property class. The action then retains matching or non-matching characters in their original order.
Practical example
Keeping numbers from YTSave 2026 — local returns 2026 while removing symbols drops the dash and check mark but keeps the words.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.