Which Czech diacritics does this remove?

All of them. The háček (caron) on č, ď, ě, ň, ř, š, ť, ž, the čárka (acute) on á, é, í, ó, ú, ý, and the kroužek (ring) on ů. Each is replaced by its base Latin letter while keeping the original upper or lower case.

Does ů become u or uu?

It becomes a single u. The ring over ů (kroužek) and the acute over ú are both length marks in Czech, but for ASCII output both simply collapse to the base letter u, matching standard transliteration practice.

Is this the same as a slug generator?

It is the diacritic-stripping step that most slug generators run first. This tool only removes accents and preserves spacing, punctuation, and case, so you can apply your own lowercasing or hyphenation afterwards.

Does it handle Slovak or German letters too?

It targets the Czech alphabet specifically, but because the mappings are per-character, any shared accented letters such as á or é from other languages are also normalised correctly. Czech-only letters like ř and ě are fully covered.

Is my text sent anywhere?

No. The mapping runs entirely in your browser using a local character table. Nothing is uploaded, logged, or stored, so it is safe for confidential documents.

Czech Diacritic Remover

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Czech writing uses three diacritic marks that ASCII cannot represent: the háček (caron, ˇ), the čárka (acute, ´), and the kroužek (ring, ˚ found only on ů). When text must travel through filenames, URL slugs, or older systems that only accept plain Latin letters, those marks have to be stripped while keeping the underlying letters readable.

How it works

The tool uses a fixed lookup table that maps every accented Czech letter to its base Latin letter, in both upper and lower case:

á→a  č→c  ď→d  é→e  ě→e  í→i  ň→n  ó→o
ř→r  š→s  ť→t  ú→u  ů→u  ý→y  ž→z

Each character of your input is checked against the table. If it has a mapping, the base letter is substituted; otherwise the character passes through unchanged. This preserves spaces, punctuation, digits, and the original casing exactly.

Tips and notes

Both ú and ů collapse to a single u — they are distinct length markers in Czech spelling but carry no separate ASCII form. The output is not lowercased, so Řehoř becomes Rehor rather than rehor; apply your own lowercasing if you are building a URL slug. Because the transformation is purely per-character, it is fully reversible only by a human who knows the original word, so keep the accented source if the meaning matters.