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.