Compare, transform, and measure

Text Tools

Local tools handle common editorial and developer text jobs with Unicode-aware counting and explicit transformation behavior.

Available now

Working text tools

Each tool opens directly and states where its processing happens.

Test regular expressions with matches and capture groups.

Count words, characters, sentences, and reading time.

Compare two texts line by line with additions and removals.

Convert prose and identifiers between common letter cases.

Sort, reverse, trim, filter, and deduplicate text lines.

Turn titles into clean URL slugs with configurable separators.

Render CommonMark-style Markdown with raw HTML disabled.

Format Markdown, GitHub-Flavored Markdown, and MDX with Prettier.

Reverse graphemes, split text, and inspect Unicode, octal, entities, and UTF-8 bytes.

Convert pasted or local HTML to Markdown without fetching remote pages.

Create ZIP archives and extract selected entries locally in your browser.

Need	Choose	Reason
Match a pattern	Regex Tester	Runs JavaScript RegExp with a timeout.
Measure content	Word Counter	Counts words, graphemes, and UTF-8 bytes.
Compare revisions	Text Diff	Marks inserted and removed lines.
Normalize content	Case Converter or Line Tools	Produces deterministic transformed text.