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regular_expression

Regex & Text

Test regular expressions, diff text, and clean up lines and whitespace. · 17 tools

Text & RegexRuns locally in your browser.Regex TesterTest regular expressions with live match highlighting and group details.Text & RegexRuns locally in your browser.Text DiffCompare two texts and highlight added, removed, and changed lines.Text & RegexRuns locally in your browser.Case ConverterConvert text between camelCase, snake_case, kebab-case, and more.Text & RegexRuns locally in your browser.Line SorterSort lines alphabetically or numerically, ascending or descending.Text & RegexRuns locally in your browser.Duplicate Line RemoverRemove duplicate lines while keeping the first occurrence of each.Text & RegexRuns locally in your browser.Line ReverserReverse the order of lines so the last line comes first.Text & RegexRuns locally in your browser.Empty Line RemoverDelete blank and whitespace-only lines from text.Text & RegexRuns locally in your browser.Whitespace TrimmerTrim leading and trailing whitespace from every line.Text & RegexRuns locally in your browser.Word & Character CounterCount characters, words, lines, and bytes in any text.Text & RegexRuns locally in your browser.Find and ReplaceReplace text across a document, with optional regex and case options.Text & RegexRuns locally in your browser.Slug GeneratorTurn titles into clean, URL-safe slugs.Text & RegexRuns locally in your browser.Text to One LineJoin multi-line text into a single line.Text & RegexRuns locally in your browser.Prefix/Suffix LinesAdd a prefix and/or suffix to every line of text.Text & RegexRuns locally in your browser.Extract Matching LinesKeep only the lines that contain a substring or match a regex.Text & RegexRuns locally in your browser.Remove Matching LinesDelete every line that contains a substring or matches a regex.Text & RegexRuns locally in your browser.Lorem Ipsum GeneratorGenerate classic lorem ipsum placeholder paragraphs.Text & RegexRuns locally in your browser.Text NormalizerApply Unicode normalization (NFC, NFD, NFKC, NFKD) to text.