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Preview of Search Popup

Search Popup by Krasen Ivanov

Displays a smart popup when you select text on any webpage: search, copy, convert, copy to clipboard, open URLs.

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About this extension
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Add-on Name

Search Popup - Smart Text Selection Assistant

Summary (80 chars)

Smart popup for text selection: search, copy, convert units & currencies instantly.

Full Description

Revolutionize your web browsing experience with Search Popup! This intelligent Firefox add-on appears instantly when you select any text, providing smart contextual actions that save you time and boost your productivity.

Blazing-Fast Performance
- Zero-lag operation with advanced DOM caching
- Pre-compiled regex patterns for instant text parsing
- Memory-efficient design with automatic cleanup
- Optimized for Firefox's rendering engine

Powerful Text Actions
- Multi-Engine Search: Choose between Google, DuckDuckGo, Bing, Brave, Qwant, Ecosia, and more
- Smart Copy: One-click clipboard copy with intelligent fallback handling
- URL Detection: Automatically detects and highlights links in your selection
- Unit Converter: Convert weights, temperatures, speeds, distances, volumes, and more
- Currency Exchange: Live rates for 100+ fiat currencies
- Crypto Support: Real-time Bitcoin, Ethereum, and major cryptocurrency prices
- Time Zone Tool: Convert any time zone to your local time instantly

Firefox-Optimized Design
- Adaptive theming that perfectly matches any website (light/dark mode)
- Smart positioning with directional arrows that never obstruct content
- Smooth animations leveraging Firefox's CSS performance
- Responsive design that works on any screen size

Privacy-First Approach
- All processing happens locally on your device
- No data sent to external servers
- Minimal permissions (clipboard write, storage only)
- Secure external links with noopener,noreferrer
- Absolutely no tracking, analytics, or telemetry

Key Features
  • Instant text selection popup
  • 6+ search engine options
  • 100+ currency conversions
  • 50+ cryptocurrency support
  • Comprehensive unit conversions
  • Time zone conversion
  • URL detection and visit
  • Adaptive light/dark themes
  • Privacy-focused design
  • Zero performance impact
  • Works on all websites
  • Firefox Quantum optimized

Tags

text-selection, search, conversion, currency, unit-converter, productivity, tools, popup, assistant, privacy, firefox

Screenshots
  1. Light mode popup showing search and copy options
  2. Dark mode popup with unit conversion example
  3. Settings page with search engine preferences
  4. Currency conversion showing live exchange rates
  5. Time zone conversion example

Perfect For
  • Students: Convert units while studying research papers and articles
  • Professionals: Instant currency conversion for international business
  • Developers: Fast search for code snippets and technical documentation
  • Researchers: Quick copy and search for academic work
  • Travelers: Time zone and currency conversion on the go
  • Shoppers: Price comparison and unit conversion while shopping online

Everyday Use Cases

Academic Research: Select and search technical terms instantly
Business: Convert international prices to your local currency
Shopping: Compare prices and convert units while browsing stores
Travel: Convert time zones and currencies while planning trips
Development: Quick search for error messages and code solutions
Data Analysis: Convert units in spreadsheets and reports

Firefox-Specific Optimizations
  • Optimized for Firefox's Quantum rendering engine
  • Efficient memory management with Firefox's garbage collection
  • Compatible with Firefox's enhanced privacy features
  • Leverages Firefox's advanced clipboard API
  • Tested across Firefox versions including latest ESR releases

Global Compatibility
  • Supports multiple number formats (1,234.56 and 1.234,56)
  • Works seamlessly across different locales and regions
  • Currency symbols from around the world (€, $, £, ¥, ₹, ₺, ₽, etc.)
  • Time zone abbreviations from all major regions

Performance Metrics
  • <1ms popup appearance time
  • Zero memory leaks over extended use
  • Minimal CPU usage (<0.1% during normal browsing)
  • Offline currency conversions available
  • Smart caching for instant results

Updates & Maintenance
  • Regular updates with new features and improvements
  • Responsive to Firefox API changes
  • Community-driven feature requests
  • Detailed changelog with each update
  • Priority support for Firefox-specific issues

Security & Privacy Commitment
  • Open source code available for review
  • No third-party tracking or analytics
  • Local-first processing philosophy
  • Minimal permission model
  • Regular security audits
  • GDPR compliant design

Firefox Recommended Features
  • Compatible with Firefox Multi-Account Containers
  • Works with Firefox's Enhanced Tracking Protection
  • Supports Firefox's private browsing mode
  • Optimized for Firefox's picture-in-picture
  • Integrates with Firefox's sync features
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Permissions and data

Required permissions:

  • Input data to the clipboard
  • Access your data for all websites

Optional permissions:

  • Access your data for all websites
Learn more
More information
Add-on Links
  • Homepage
  • Support site
  • Support Email
Version
1.72.1
Size
78.97 KB
Last updated
22 days ago (Jan 14, 2026)
Related Categories
  • Search Tools
  • Appearance
  • Tabs
License
GNU General Public License v3.0 only
Version History
  • See all versions
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