Overview
Introduction
Stripping a specific letter out of a large block of text by hand is slow and easy to get wrong, especially when the letter is common.
It runs entirely client-side, so nothing you paste is ever uploaded to a server.
What Is Letter Remover?
A letter remover that deletes every occurrence of one or more chosen letters from your text, matching case-insensitively.
It runs entirely client-side as part of this site's String Tools collection, so nothing you paste is ever uploaded to a server.
How Letter Remover Works
The letters you enter are split on commas, trimmed, and validated as single characters, then every character in the input is filtered out if its lowercase form matches any of them.
The transformation happens synchronously in JavaScript the moment you type, with no network round trip involved.
When To Use Letter Remover
Use it to clean unwanted characters out of pasted data, build a word puzzle that omits certain letters, or see how text reads with a letter removed entirely.
It's a fast way to get the answer without opening a code editor, a REPL, or writing a one-off script just to check.
Often used alongside Punctuation Remover and Whitespace Remover.
Features
Advantages
- Handles multiple letters in one pass via a comma-separated list.
- Case-insensitive matching removes both cases without extra input.
- Checks membership against a Set, so extending the letter list does not slow the pass down noticeably.
Limitations
- Only removes single letters, not whole substrings or words.
- Matches exact single characters, so a letter carrying a diacritic such as 'á' is not removed when you specify plain 'a'.
Examples
Best Practices & Notes
Best Practices
- List every letter you want gone in one call rather than running the tool multiple times.
- Read the result through for words that have become unreadable, since nothing is inserted in place of the removed letters.
- Remove vowels or consonants as a group with the dedicated tools rather than listing every one of them out individually here.
Developer Notes
The letter list is parsed into a lowercase `Set` for O(1) membership checks, then the input is rebuilt with `[...input].filter(char => !lowerSet.has(char.toLowerCase()))`, which keeps the implementation correct for Unicode code points beyond the BMP.
Letter Remover Use Cases
- Cleaning a specific unwanted character out of pasted data
- Building a lipogram or word puzzle that omits certain letters
- Testing how legible text remains with a letter removed
Common Mistakes
- Entering a multi-character string instead of a single letter.
- Forgetting that removal is case-insensitive and removes both cases.
Tips
- Use it alongside a vowel or consonant remover for more targeted letter-frequency experiments.
- Because matching is case-insensitive, listing 'a' also removes every 'A', so there is no need to enter both forms.