Convert words to numeronyms (a11y-style) and acronyms. Input never leaves your device — everything runs locally in your browser.
Content reviewed October 2026 · About Toolzum
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A numeronym replaces some letters in a word with a number representing the count of skipped letters. For example, 'accessibility' becomes 'a11y' (a + 11 letters + y). 'Internationalization' becomes 'i18n'.
Yes. The tool shows both at once — the numeronym (letter-number-letter) plus the standard acronym (first letters of each word).
The tool counts the letters between the first and last character and replaces them with the count — 'cat' becomes 'c1t'. Two-letter words stay unchanged.
Numeronyms are widely used in tech: a11y (accessibility), i18n (internationalization), l10n (localization), n11n (normalization). They save space in code, URLs, and variable names.
No. All generation happens locally in your browser. No text data is sent to any server.
First letter + middle count + last letter: personalization has 15 letters, 15-2=13, hence p13n. Words of 2 or fewer letters pass through unchanged; the acronym for the same input shows beside it.