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Text Tools Lab: Diff, Case Convert, Word Counter, Regex & More

Free browser text utilities — diff and compare, case converter, word/character counters, sort lines, slug generator, and regex tester.

6 min read

What Text Tools Lab does

Diff, compare, convert case, count words, sort lines, generate slugs, and test regex online. Built for writers, developers, SEOs, and students, every tool runs in your browser at rhypernova.com — no install required.

Why teams use Text Tools

  • Instant browser tools — paste text and get results immediately.
  • Diff and compare for reviews, contracts, and code snippets.
  • Word and character analytics for SEO and writing limits.
  • Line cleanup: dedupe, sort, reverse, and format.
  • Slug generator for permalinks and CMS titles.
  • Regex tester and generator for common pattern intents.

Common use cases

  • Code review and document diffs.
  • SEO slug generation for blog posts.
  • Resume and article word counts.
  • Regex validation for forms and parsers.
  • Duplicate log-line cleanup.
  • Case conversion for APIs and identifiers.

Highlights

  • Text diff & compare
  • Case & slug tools
  • Counters
  • Regex lab

Pro tip

Open any guide below for a step-by-step walkthrough of that exact tool, then launch it live from the same page when you are ready.

All Text Tools Lab guides

Step-by-step how-to guides for every Text Tools feature: