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Web Calculator with Highlighter

ExtensionTools7 users
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Overview

Instantly calculate numbers you see online. Sum rows/columns, highlight text, and annotate with a pen tool. No more copy-pasting!

Transform Your Browser into a Smart Calculator & Annotation Tool! Web Calculator with Highlighter revolutionizes how you interact with numbers and information online. Stop juggling browser tabs and external apps—get instant calculations and powerful annotation directly on any webpage. Features: • Click numbers, rows, or columns for instant sums, averages, medians, and more. • Built-in calculator for custom equations and advanced functions. • Pen & highlighter to draw, annotate, or highlight text on webpages. • Dark mode support for comfortable day/night use. • Keyboard shortcuts for fast toggling and productivity. 💡 How it works: 1. Once added/installed, click the extension icon or use the keyboard shortcut Alt+X. 2. Click numbers to get instant sums, averages, medians, and more. 3. Default mode is Freehand; switch to Row (key R) or Column (key C) mode anytime. 4. Use Custom Operation to enter and solve your own equations. 5. Toggle Pen Mode with the shortcut Alt+P to draw or highlight directly on the page. Privacy: Uses Google Analytics (GA4) for anonymized usage stats only. No personal data collected.

Details

  • Version
    1.3
  • Updated
    September 25, 2025
  • Offered by
    resoluteacc
  • Size
    53.78KiB
  • Languages
    English (United States)
  • Developer
    Email
    resoluteacc@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Web Calculator with Highlighter has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Web Calculator with Highlighter handles the following:

User activity

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, please open this page on your desktop browser

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