# Calculation Pad

> Adds a jQuery based single page application with a text pad and spreadsheet for Thunderbird/SeaMonkey/Firefox

Canonical page: [https://chrome-stats.com/d/calculation-pad](https://chrome-stats.com/d/calculation-pad)

## Overview

- **ID:** `calculation-pad`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Jacques
- **Category:** download-management,tabs
- **Version:** 0.23
- **Last updated:** 2025-03-17
- **First published:** 2025-03-17
- **Size:** 1.47 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/calculation-pad/)

## Description

This extensions aims to be one of the first to implement a serverless single page application in jQuery featuring cross-platform compatibility, Excel like spreadsheet functionality from jSpreadsheet v4, and made available in a self-contained extension page directly from within Thunderbird/Firefox/Sea Monkey. A plain text pad is also included. A key feature of this extension is file input and output through base64 conversion. Plain text/calculated values and styles/formats can be imported and exported to and from the user's device. Plain text from the text pad can also be imported and exported to and from the user's device.

## Rankings

- #140,864 — Overall
- #64 — jquery
- #113 — spreadsheet

## Permissions and access

### Permissions

- `tabs`
- `menus`
- `clipboardWrite`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/calculation-pad)