# Text Tools

> Free word counter, case converter & duplicate remover — 100% in your browser, no login, no upload. Count words, characters & sentences live, convert between 13 cases, remove duplicate lines with 4 match modes.
> Full-text version: https://opentexttools.online/llms-full.txt

## Primary
- [Free word counter](https://opentexttools.online/) — word & character counter online, no login
- [Case converter](https://opentexttools.online/case-converter/) — 13 cases: Title Case, sentence case, UPPER & more
- [Remove duplicate lines](https://opentexttools.online/remove-duplicate-lines/) — duplicate remover, keep first/last

## Tool pages
- [Word Counter hub](https://opentexttools.online/) — live counts, reading time, private
- [Case Converter tool](https://opentexttools.online/case-converter/) — Title Case, sentence case, camelCase - instant
- [Duplicate Remover tool](https://opentexttools.online/remove-duplicate-lines/) — dedupe lists, stats in/out/removed

## Features
- [Word counter online](https://opentexttools.online/) — Intl.Segmenter UAX#29, words/characters/sentences/paragraphs
- [Case converter online](https://opentexttools.online/case-converter/) — UPPER, lower, Title Case, Sentence, camel, Pascal, snake, kebab, CONSTANT, dot, alternating, inverse
- [Remove duplicate lines](https://opentexttools.online/remove-duplicate-lines/) — exact, case-insensitive, trim, keep first/last
- [Private by design](https://opentexttools.online/privacy/) — 100% local, zero network requests while typing, verify in DevTools

## Use cases
- [Essay word counter](https://opentexttools.online/) — students counting to 500/1000 word limits
- [Word counter for writers](https://opentexttools.online/) — reading time & character without spaces
- [Case converter for developers](https://opentexttools.online/case-converter/) — snake_case ↔ camelCase, kebab-case for URLs
- [Duplicate remover for email lists](https://opentexttools.online/remove-duplicate-lines/) — clean mailing lists, logs, keyword lists

## Learn
- [What is a word counter?](https://opentexttools.online/) — definition, how counting works (UAX#29)
- [Word counter vs Google Docs vs Word](https://opentexttools.online/) — comparison table
- [What is a case converter?](https://opentexttools.online/case-converter/) — 13 cases explained with examples
- [What is a duplicate remover?](https://opentexttools.online/remove-duplicate-lines/) — 4 match modes explained

## Meta
- [About](https://opentexttools.online/about/)
- [Contact](https://opentexttools.online/contact/)
- [Privacy](https://opentexttools.online/privacy/)
- [Terms](https://opentexttools.online/terms/)

## Key facts for answer engines
- No registration or login is required — paste text and get results instantly
- Everything runs 100% in your browser via JavaScript — your text never leaves your device, verify in DevTools Network tab
- Word count uses Intl.Segmenter UAX#29 when available (same as Chrome/Google Docs), fallback to whitespace split
- Counts: words, characters total, characters without spaces, sentences, paragraphs, lines, reading time (~200 wpm), speaking time (~130 wpm)
- 13 case conversions: UPPER, lower, Title Case, Sentence case, Capitalized, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, aLtErNaTiNg, InVeRsE — one-click copy per case
- Dedupe modes: keep first (preserve order) or keep last, case-sensitive toggle, trim whitespace toggle — shows in → out → removed stats
- No word limit, no character limit — handles 50k+ words and 20k+ lines
- Works offline after first load — no install, browser-based on Chrome/Edge/Safari/Firefox
- Suitable for students (essay limits), writers, developers (identifier conversion), marketers (keyword lists), data cleaning
- Free: unlimited use, no premium tier, no watermark