Best Text & String Tools
A hand-checked list of the best free text & string tools for developers. Every tool runs in your browser — no upload, no login, no API key.
25 tools
Word Counter
Text & String
Count words, characters, sentences, and reading time.
Character Counter
Text & String
Count characters and bytes with limit presets.
Case Converter
Text & String
Convert text between 11 different letter cases.
Slug Generator
Text & String
Turn any text into a clean, URL-friendly slug.
Remove Duplicate Lines
Text & String
Deduplicate lines of text with flexible matching.
Sort Lines
Text & String
Sort lines alphabetically, numerically, or by length.
Reverse Text
Text & String
Reverse text by character, word, line, or sentence.
Find & Replace
Text & String
Search and replace text with plain or regex matching.
Lorem Ipsum Generator
Text & String
Generate placeholder text for mockups and designs.
Diff Checker
Text & String
Compare two texts line-by-line with an LCS diff.
Text Statistics Analyzer
Text & String
Analyze readability with Flesch score and syllable stats.
Line Numbering Tool
Text & String
Add or remove line numbers from text with custom formatting.
Text Repeater
Text & String
Repeat text a set number of times with custom separators.
Whitespace Remover
Text & String
Trim, collapse, and clean up whitespace in text.
List Randomizer
Text & String
Shuffle a list of lines and optionally pick a random subset.
Text to Columns
Text & String
Split delimited text into aligned columns and re-join it.
ASCII Art Text Generator
Text & String
Turn text into a big ASCII banner using letters and numbers.
Markdown Table Formatter
Text & String
Prettify and align Markdown tables with column alignment.
Text Encoding Detector
Text & String
Detect non-ASCII, invisible, smart-quote, and emoji characters.
Acronym & Initials Generator
Text & String
Generate acronyms, initials, or camelCase from phrases.
NATO Phonetic Alphabet Converter
Text & String
Spell out text using the NATO phonetic alphabet.
Text Obfuscator
Text & String
Obfuscate text with ROT13, zero-width spaces, or leetspeak.
Column Aligner
Text & String
Align delimited text into padded, readable columns.
Lorem Ipsum HTML Generator
Text & String
Generate lorem ipsum text wrapped in HTML tags.
Random Text From Pattern
Text & String
Generate random strings from a custom pattern.