UK ↔ US Spelling Highlighter

Favourite or Favorite? Colour or Color? Organise or Organize?

UK ↔ US Spelling Highlighter helps you instantly spot spelling inconsistencies on any webpage. Perfect for QA engineers, developers, content writers, and international teams working across UK and US markets.

WHAT IT DOES? This extension highlights UK or US English spelling variations on any webpage with a single click. Choose your target:

• Highlight UK English - Finds and highlights UK spellings (colour, favourite, organise) in blue • Highlight US English - Finds and highlights US spellings (color, favorite, organize) in orange • View Word List - See all unique words found in the popup • Clear Highlights - Remove all highlights instantly

KEY FEATURES: ✓ 449 Word Pairs - Comprehensive dictionary covering business, SaaS, AI, contact centers, and technical terminology ✓ Instant Detection - Scans entire page in under 1 second ✓ Visual Highlighting - Color-coded badges (blue for UK, orange for US) ✓ Word List Display - Shows all unique spellings found in a convenient popup list ✓ Non-Destructive - Only highlights, never modifies page content ✓ Works Everywhere - Compatible with all websites including Google Docs, Sheets, and Gmail ✓ 100% Offline - No network calls, no data collection, complete privacy ✓ One-Click Clear - Remove all highlights instantly

WHO IS THIS FOR? QA Engineers

• Review documentation for spelling consistency in seconds instead of hours
• Catch inconsistencies before they reach production
• Generate bug reports with exact word lists
• Save 90% of time on spelling QA tasks

Developers

• Code review PRs for spelling consistency in strings and comments
• Prepare localization files for different markets
• Validate documentation sites instantly
• Save 85% of time on spelling consistency checks

Content Writers & Editors

• Adapt content between UK and US markets
• Maintain brand consistency across regions
• Spot inconsistencies in imported content
• Professional quality assurance in seconds

Product Managers

• Validate market-specific documentation
• Review competitor sites for target audience
• Ensure brand consistency across touchpoints
• Prepare for international launches

DICTIONARY COVERAGE The extension includes 449 unique word pairs across:

• Business & SaaS - monetize, prioritize, customize, centralize • AI & ML - generalize, randomize, normalize, visualize • Contact Centers - analyze, categorize, standardize, summarize • Coaching & Training - criticize, empathize, energize, sensitize • Automation - mechanize, optimize, digitize, synchronize • Analytics - characterize, itemize, parametrize • Security - anonymize, sanitize • Localization - localize, internationalize, globalize

Plus common words like colour/color, favourite/favorite, centre/center, behaviour/behavior, and hundreds more.

HOW TO USE?

1. Install the extension
2. Navigate to any webpage
3. Click the extension icon in your toolbar
4. Choose your scan mode:
   • "Highlight UK English" for UK spellings
   • "Highlight US English" for US spellings
5. View the results:
   • Total count of matches
   • Complete list of unique words found
   • All words highlighted on the page
6. Click "Clear Highlights" when done

EXAMPLES: UK to US: • behaviour → behavior • analyse → analyze • optimisation → optimization • localisation → localization • colour → color • centre → center

US to UK: • color → colour • organize → organise • center → centre • license → licence • analyze → analyse • customize → customise

PRIVACY & SECURITY: • No data collection - Zero tracking, zero analytics • Offline first - No network requests ever made • Local processing - Everything runs in your browser • No permissions abuse - Only uses activeTab and scripting for highlighting • Open source - Full transparency in code

TECHNICAL DETAILS: • Blazing fast - Optimized regex with caching • Smart detection - Longest-match-first algorithm prevents false positives • Case preserved - Handles lowercase, Title Case, and UPPERCASE • Shadow DOM support - Works with modern web components • Form field detection - Highlights text in inputs and textareas • Google Apps compatible - Non-destructive mode for Docs, Sheets, Gmail

TIME SAVINGS: QA Engineers: Save 90% of spelling review time

• Before: 1-2 hours reviewing documentation across 10-15 pages
• After: 10 seconds per webpage with instant word list
• Result: 2 hours/week saved per person

Developers: Save 85% of consistency check time

• Before: 30-45 minutes code reviewing for spelling issues
• After: 30 seconds to scan entire documentation site
• Result: 1.5 hours/week saved per person

COMPATIBILITY: Works on all websites including: • Documentation sites • Content management systems • Google Workspace (Docs, Sheets, Gmail, Slides) • GitHub, GitLab, Bitbucket • Confluence, Notion, Jira • WordPress, Medium, Substack • And any other webpage

SUPPORT & FEEDBACK: Found a bug or have a suggestion? I'd love to hear from you!

GitHub: https://github.com/antivirusakash/uk-us-spelling-switch-figma-plugin

Made with love by Akash Solanki LinkedIn: https://www.linkedin.com/in/antivirusakash/

VERSION HISTORY

1.0.1 - Initial Release • 449 word pair dictionary • Visual highlighting with color coding • Word list display in popup • Google Apps compatibility • Shadow DOM support • Form field detection