How to Remove Accents from Text: A Complete Guide to Diacritics Removal

What Are Accents and Diacritics?

Accents and diacritics are marks added to letters to change their pronunciation or meaning. In written language, they appear above, below, or through characters — such as é, ü, ç, ñ, and ø. These marks exist in dozens of languages including French, Spanish, German, Portuguese, Italian, Polish, Czech, Vietnamese, and many others.

In Unicode terms, accented characters can be represented in two ways: as a single precomposed character (like é as U+00E9) or as a base letter followed by a combining diacritical mark (like e + combining acute accent U+0301). Understanding this distinction is important when cleaning text programmatically, because a naive approach might miss combining marks.

While accents are essential for correct spelling and pronunciation in their native languages, there are many situations where you need to strip them and work with plain ASCII text.

Why Remove Accents from Text?

There are several practical reasons to remove accents and convert accented characters to their plain ASCII equivalents:

URL Compatibility

URLs can only contain ASCII characters. Accented characters in a URL path are percent-encoded, producing long and unreadable strings. For example, /cómo-estás becomes /c%C3%B3mo-est%C3%A1s. Converting to /como-estas produces a clean, readable URL that users can type and share easily. Use our URL Encoder to handle encoding when needed.

Database and System Compatibility

Older databases, legacy systems, and certain file formats may not support Unicode or accented characters. Removing diacritics before storage prevents data corruption, sorting errors, and search failures.

SEO and Search

Search engines often treat accented and non-accented versions of a word as distinct. A search for cafe may not return results for café. By normalizing accented characters to their base form, you improve discoverability and avoid splitting your search rankings across multiple variations.

Collation and Sorting

Alphabetic sorting becomes inconsistent when accented characters are mixed with plain ones. In many systems, é sorts after z, which can break alphabetical listings and confuse users. Stripping accents ensures consistent, predictable sorting.

Data Processing and Migration

When moving data between systems or processing large text corpora, inconsistent accent encoding can cause errors. Normalizing diacritics upfront prevents these issues and simplifies downstream processing.

Common Accented Characters and Their Replacements

The table below lists the most frequently encountered accented characters and their standard ASCII replacements. This mapping covers the majority of Western European languages.

Note that some characters like ß and æ expand to two characters (ss, ae) rather than a single replacement. Our Remove Accents tool handles all of these mappings automatically.

How to Remove Accents Online

The fastest way to remove accents from text is to use a dedicated online tool. The FreeTextUtils Remove Accents tool strips diacritics from any text in real time. Here is how it works:

1. Paste or type your accented text into the input box
2. The tool instantly converts all accented characters to their plain ASCII equivalents
3. Copy the cleaned output and use it in URLs, databases, filenames, or anywhere ASCII text is required

The tool handles precomposed characters, combining diacritical marks, and edge cases like ß → ss. It also preserves the original case of letters, so É becomes E (not e).

If you also need to normalize case after removing accents — for example, converting Déjà Vu to DEJA VU in uppercase — use the Case Converter after stripping diacritics.

Removing Accents for URL Slugs

Accent removal is a critical step in URL slug generation. A typical slug pipeline looks like this:

1. Remove accents — convert accented characters to plain ASCII
2. Convert to lowercase — avoid duplicate content issues from mixed case
3. Replace spaces with hyphens — Google recommends hyphens as word separators
4. Strip special characters — remove punctuation, symbols, and non-alphanumeric chars

For example, the French phrase Comment ça va? goes through this process:

This is exactly what our Slug Generator does automatically. Paste your title or phrase and it handles accent removal, lowercasing, hyphenation, and trimming in one step.

Best Practices for Accent Removal

Normalize Unicode First

Always normalize accented text to Unicode Normalization Form D (NFD) before stripping. NFD decomposes combined characters into base letter + combining mark, making the actual diacritic removal straightforward.

Preserve Meaningful Characters

Not all diacritics should be stripped blindly. For example, the German ß is a distinct letter, not an accented s. Convert it to ss rather than s to preserve meaning.

Consider Language Context

Some characters have different replacements depending on the language. Æ in Danish is a distinct letter, but in English it is often replaced with AE. If possible, detect the source language for more accurate conversion.

Test Edge Cases

Always test your accent removal pipeline with text that includes combining marks, ligatures (æ, œ, ß), and characters from multiple scripts. A robust tool like the Remove Accents tool handles these cases properly.

Do Not Remove for Translation

If you are translating or localizing content, keep accents in the source text. Removing diacritics changes spelling and may introduce ambiguities. Only strip accents for technical purposes like URL generation, database storage, or ASCII-only systems.

FAQ

Does removing accents change the meaning of words?

Sometimes. In Spanish, cómo (how) and como (like/as) have different meanings. In French, ou (or) and où (where) are distinct. For most technical use cases like URLs and filenames, however, the stripped version is acceptable. For translated content, keep the original accented text.

Can I remove accents in Microsoft Word or Google Docs?

Yes. In Microsoft Word, you can use Find and Replace with special characters, or use the Symbol dialog to replace individual accented letters. Google Docs does not have a built-in accent removal feature, but you can use an add-on or copy your text into an online Remove Accents tool.

What is the difference between decomposed and precomposed Unicode?

Precomposed characters are single code points (like é as U+00E9). Decomposed characters are a base letter plus a combining mark (like e + combining acute accent U+0301). Both render the same way visually, but accent removal tools must handle both forms. Our tool supports both representations.

Does removing accents affect SEO?

It depends. For URL slugs, removing accents is essential for clean, shareable links. For page titles and body content, Google generally handles accented characters well, but normalizing accents can help avoid keyword fragmentation across accented and non-accented variants.

Is accent removal reversible?

No. Once accents are stripped, the original accented form cannot be recovered unless you keep a copy of the original text. Always preserve your source text before running any accent removal process.