Which marks does it remove?

It removes all Portuguese diacritics: the acute (á é í ó ú), the grave (à), the circumflex (â ê ô), the tilde (ã õ), the diaeresis (ü), and the cedilla (ç). After stripping, á à â ã all become a, é ê become e, í becomes i, ó ô õ become o, ú ü become u, and ç becomes c.

How does the cedilla in ç become a plain c?

Under Unicode NFD normalization, ç decomposes into the base letter c plus a combining cedilla mark. The tool deletes every combining mark in the U+0300 to U+036F block, so the cedilla is removed and a clean c remains, just like the accents on the vowels.

Will it damage non-Portuguese characters?

No. Only separable base-plus-accent combinations are affected. Letters that are single indivisible code points without a combining mark, and any plain ASCII characters, pass through unchanged, so the rest of your text is preserved.

What is this useful for?

ASCII normalization is handy for generating URL slugs, file names, email local parts, search keys, sorting, and feeding text into older systems that do not handle accented characters well. Coração becomes coracao and São Paulo becomes Sao Paulo.

Does it run on a server?

No. All processing happens locally in your browser using the built-in Unicode normalization, so your text is never uploaded anywhere.

Portuguese Diacritic Remover

Email me this result

Get this tool's output sent to your inbox, plus one useful tool a week. No spam, unsubscribe any time.

This tool removes the accents and the cedilla from Portuguese text, producing a plain ASCII version. It is built for cases where accented characters cause problems: URL slugs, file names, usernames, search indexes, and legacy systems that only accept unaccented letters.

How it works

The tool relies on Unicode normalization rather than a hand-written lookup table:

"coração".normalize("NFD")  ->  c o r a c ̧ a o ̃   (base letters + combining marks)
remove U+0300..U+036F        ->  c o r a c a o
result                       ->  "coracao"

NFD decomposition splits each precomposed accented letter into its base letter plus a separate combining mark. The tool then deletes every combining mark in the Unicode block U+0300 to U+036F, which covers the acute, grave, circumflex, tilde, diaeresis, and cedilla. The base letters remain, so the word stays readable.

Tips and notes

The mapping is exactly what Portuguese needs: á à â ã to a, é ê to e, í to i, ó ô õ to o, ú ü to u, and ç to c. Because the method is generic, it also strips accents from any other Latin-script text you paste, so São Paulo becomes Sao Paulo and José becomes Jose. Everything runs in your browser, and the counter tells you how many marks were removed so you can confirm the text actually contained accents.