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Leetspeak converter
l337 at three strengths — and it reverses in one click, which is the point.
It runs entirely in this browser tab: what you type is never uploaded, and the tool makes no network request while it works. Open your browser's network panel and try it — nothing leaves the page. There is no sign-up and no limit beyond what your own browser can hold.
Settings
- Direction
- Choices: Convert, Convert back.
- Level
- Choices: Basic, Medium, Extreme.
- Chance
- Per cent, so a hundred means every one. A number from 1 to 100.
- Seed
- Zero means a fresh one each time. A number from 0 to 999999.
- Your own substitutions
- a=@, e=3 — pairs separated by commas.
How to use it
- Paste your text into the box above, or open a file.
- Adjust the settings beside it until the result is what you wanted.
- Copy the result, or save it as a file. The result updates as you type.
Questions
- Is what I type uploaded anywhere?
- No. This page carries the whole tool as WebAssembly and runs it on your own device. Nothing you type is sent anywhere.
- Why does the result show as boxes on this page?
- The two typefaces this interface ships do not have these characters — very few typefaces do. The result is correct and copying it gives the real characters; the tool says so whenever that is the case.
- How long will the result be?
- Longer than it looks, and the tool shows all three numbers: characters, letters as a person would count them, and bytes. A field's limit is in one of those three and never says which, which is why all three are here.
- Can I get this result again later?
- The settings travel in the page's address, after the #, so a link reproduces them exactly — and the fragment of an address is never sent to a server. Anything random takes a seed, so the same seed gives the same result every time.
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