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Special Characters Remover

Remove standardized Unicode symbols alone or symbols plus punctuation without deleting letters, numbers, marks, or whitespace.

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Paste the text to clean.
  2. 2.Choose Unicode symbols and punctuation or symbols only.
  3. 3.Remove characters and verify the exact output and removed-code-point count.

About Special Characters Remover

Special Characters Remover filters Unicode symbols and, when selected, Unicode punctuation from pasted text. Choose the broad mode to remove both standardized categories or the narrower mode to remove symbols while retaining punctuation. The exact cleaned result and removed code-point count appear in the browser. No text is uploaded, stored, or sent to an API.

The broad mode uses Unicode General_Category values beginning with P for punctuation and S for symbols. This covers more than an ASCII list: ordinary punctuation, connector punctuation such as underscore, currency signs, mathematical operators, arrows, many emoji, copyright signs, and punctuation used by non-Latin writing systems can all match their standardized categories. It does not guess from how a glyph looks.

Symbols-only mode removes the S categories while leaving P punctuation intact. For example, “Hi, $5!” becomes “Hi, 5!” because the dollar sign is a currency symbol while the comma and exclamation mark are punctuation. Broad mode removes all three. The product does not expose dozens of ad hoc checkboxes whose interactions would be hard to predict.

Letters, decimal digits, other numbers, combining marks, separators, and whitespace remain. An accented character represented as a base letter plus a combining mark is therefore not broken by the filter. Spaces and line breaks are not collapsed or trimmed. Attached words may become adjacent when punctuation or a symbol between them is removed; the tool deliberately does not insert replacement spaces because it cannot infer the intended grammar.

Matching uses JavaScript Unicode property escapes with the Unicode flag. Removal count measures matched Unicode code points, not UTF-16 code units. An emoji represented by one supplementary code point counts once even though JavaScript stores it as a surrogate pair. Multi-code-point emoji sequences can contain several symbols plus joiners or variation selectors; matched symbol code points are removed while nonmatching formatting code points may remain, so this is not an emoji-sequence sanitizer.

Input is capped at 1,000,000 UTF-16 code units. The exact limit is accepted; one additional unit is rejected before replacement and no partial output is produced. Empty input is rejected. Editing the input or mode clears the old result immediately so stale output cannot be mistaken for current settings.

The Unicode categories are standards data, not a hand-maintained character blacklist. Golden tests cover currency, punctuation, connector punctuation, copyright, arrows, emoji, CJK punctuation, and a decomposed accented letter. This gives broader and more auditable behavior than listing characters that happen to appear on one keyboard.

Use the tool for controlled plain-text cleanup, identifier preparation drafts, or removing decorative marks from copied content. Do not use it as a security sanitizer for SQL, HTML, shell commands, URLs, filenames, usernames, or authentication data. Safe validation depends on the destination's allowlist and grammar, not on deleting characters labeled special.

The result may change meaning, mathematical notation, currency values, sentence boundaries, or accessibility pronunciation. Review it before publishing. For selecting and copying exact symbols use Special Characters Copy and Paste; for whitespace cleanup use Whitespace Remover; for application input validation implement a destination-specific allowlist on the server.

Methodology & sources

Validate nonempty input at or below 1,000,000 UTF-16 code units, choose either Unicode property escape S or the union of P and S under Unicode matching, replace each matched code point with an empty string, increment an exact match count, preserve every nonmatching code unit without trimming or normalization, and return no partial result on validation failure.

Frequently asked questions

What counts as a special character?
The tool uses standardized Unicode P punctuation and S symbol categories, depending on the selected mode.
Are letters with accents removed?
No. Letters and combining marks remain because they are not punctuation or symbol categories.
Does removal add spaces?
No. Matching code points are deleted exactly; existing whitespace remains unchanged.
Is this a security sanitizer?
No. Security validation must use a destination-specific allowlist and server-side rules.

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