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Word/Character Counter

Whether you are drafting a tweet, optimizing a blog post or proofreading a document, this tool gives a real-time breakdown of your content’s structure.

GitHubFirefox Add-ons
tcmhack.com/wordcharacter-counter
Word/Character Counter preview

Overview

A productivity extension for instant, deep textual analysis on any webpage, without copy-pasting into external apps.

Key features

  • Counts characters, words, sentences, paragraphs and whitespace.

  • Context menuHighlight text on any page, right-click and analyze.

  • Privacy-focusedText is analyzed locally and never leaves your browser.

  • Lightweight and always one click away in the toolbar.

Challenges

  1. 01

    Messaging between the service worker, content scripts and popup.

  2. 02

    Precise RegEx for sentences and paragraphs across punctuation styles.

  3. 03

    Capturing selections across nested elements and iframes.

  4. 04

    Built on Manifest V3 for long-term stability.

Objectives

  1. 01

    Real-time data on five key metrics.

  2. 02

    Right-click analysis that keeps users in their workflow.

  3. 03

    Simple, scannable statistics.

  4. 04

    Works everywhere, from Google Docs to social dashboards.

Outcome

  • One-click structural breakdown from the context menu.

  • Character counts with and without spaces for social limits.

  • Minimal, distraction-free UI.

  • Instant results even on large documents.

Screenshots