Replace Digits with X
Mask ASCII digits locally in your browser while preserving every other character, space, and line break.
Replace digits with X
A QUICK WALKTHROUGH
How to use this tool
- Enter up to 100,000 characters.
- Replace ASCII digits 0–9 with X.
- Copy the result or clear the text.
ASCII-only scope
The operation replaces exactly the ten ASCII code points 0–9. Arabic-Indic, fullwidth, and other Unicode decimal digits remain unchanged.
Bounded and local
The input is limited to 100,000 UTF-16 characters. Replacement and copying happen in this browser; no upload or storage is used.
GOOD TO KNOW
Common questions
Are Unicode decimal digits replaced?
No. Only ASCII 0–9 are replaced, so other Unicode decimal digits stay visible.
Is the input uploaded?
No. Processing happens locally in your browser.