# String Tools

> Offline string processing toolkit: reverse, sort lines, deduplicate, extract emails/URLs/numbers, Base64, URL encode, HTML escape, and more.

Canonical page: [https://chrome-stats.com/d/string-tools](https://chrome-stats.com/d/string-tools)

## Overview

- **ID:** `string-tools`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** Kofibus
- **Daily users:** 28
- **Version:** 4.1.3
- **Last updated:** 2026-04-13
- **First published:** 2026-03-10
- **Size:** 663 KB
- **Data as of:** 2026-04-16
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/string-tools/)

## Permissions and access

### Permissions

- `clipboardRead`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
- This extension is not longer available in the store

## Similar extensions and apps

- [String Utilities](https://chrome-stats.com/d/string-utilities) — 26 users
- [Text Toolkit](https://chrome-stats.com/d/texttoolkit) — 26 users
- [Smart Text Tools](https://chrome-stats.com/d/smart-text-tools)
- [Text Tools](https://chrome-stats.com/d/text-tools) — 78 users, 4.43 / 5
- [TextForge](https://chrome-stats.com/d/textforge)
- [Dev Toolbox](https://chrome-stats.com/d/dev-toolbox) — 9 users, 5.00 / 5
- [StackOnlineTools: All-in-One Online Tools](https://chrome-stats.com/d/stack-online-tools) — 1 users
- [Text Processing Lab](https://chrome-stats.com/d/text-processing-lab)
- [Local Text Optimizer](https://chrome-stats.com/d/local-text-optimizer)
- [Text Format Toolkit](https://chrome-stats.com/d/text-format-toolkit) — 1 users
- [Toolz.dev - Developer Tools](https://chrome-stats.com/d/toolz-dev-developer-tools) — 1 users
- [ZeroWebTools Companion](https://chrome-stats.com/d/zerowebtools-dev)

---

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