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Leetspeak Converter
Convert text with one fixed letter-to-digit leetspeak map.
Pasted text, One UTF-8 text file
leetspeak.txt, leetspeak-report.json
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
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How to use this tool
- Enter the shown fields. A selected file takes precedence over pasted input, including an empty selected file.
- Convert leetspeak and inspect the complete result.
- Download leetspeak.txt, leetspeak-report.json.
Examples
Leet text becomes L337 73x7.
Limitations
- Only the six disclosed character pairs change; there is no automatic dictionary selection.
- Decoding cannot recover original capitalization or distinguish existing digits from encoded letters.
- Up to 200,000 UTF-16 units and 10,000 logical records; complete output and replacement reports have bounded size.
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