# String Obfuscator for Filter Testing

URL: https://phishdestroy.io/developer-tools/string-obfuscator
Category: General dev
Where it runs: Runs locally (nothing you enter is uploaded)

Create lookalike versions of a word or domain to test whether spam filters, brand-protection rules or your own detectors notice Cyrillic letters and invisible characters. The Homoglyph Checker and the Invisible Character Detector show how such text is flagged.

## Example input

Lookalike example.com

```
example.com
```

The homoglyph row reads ехаmрlе.соm: e, x, a, p, c and o are replaced with Cyrillic letters, while m, l and the dot stay Latin.

## FAQ

### What does each output contain?

The homoglyph row swaps 11 lower-case and 12 upper-case Latin letters for Cyrillic lookalikes (a becomes U+0430, o becomes U+043E and so on), the zero-width row puts an invisible character between the letters, and the char-code row writes every character as a \uXXXX escape.

### What is it meant for?

Testing: check that a mail filter, a brand-monitoring rule or a detector you wrote treats ехаmрlе.соm differently from example.com. Paste the result into the Homoglyph Checker or the Invisible Character Detector to see how the trick is flagged; do not use it to disguise content.

### Is the text sent anywhere?

No. The substitutions happen in your browser, and nothing is uploaded.

## Related tools

- [Homoglyph Checker](https://phishdestroy.io/developer-tools/homoglyph-checker)
- [Invisible Character Detector](https://phishdestroy.io/developer-tools/invisible-char-detector)
- [Unicode Inspector](https://phishdestroy.io/developer-tools/unicode-inspector)
- [Lookalike Domain Generator](https://phishdestroy.io/developer-tools/lookalike-generator)

All tools: https://phishdestroy.io/developer-tools