# Spectrum

> Adds new features to the spectr39s.ru website

Canonical page: [https://chrome-stats.com/d/spectrum39](https://chrome-stats.com/d/spectrum39)

## Overview

- **ID:** `spectrum39`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Alextimka
- **Category:** appearance,language-support
- **Daily users:** 1
- **Version:** 1.5.2
- **Last updated:** 2024-11-15
- **First published:** 2024-05-11
- **Size:** 28 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/spectrum39/)
- **Website:** [https://github.com/Alextimka/Spectrum/](https://github.com/Alextimka/Spectrum/)

## Description

Spectrum is a browser extension that improves the <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/898851d3b37aeab5a9ffae9e26c420dfbb87be948d468a0923005df4c515234b/http%3A//spectr39s.ru" rel="nofollow">spectr39s.ru</a> website by adding new features and fixing some bugs.

List of new features and improvements:
 - Dark theme
 - No messenger button bug
 - Rounded edges
 - Version check

## Rankings

- #96,743 — Overall
- #148 — messenger

## Permissions and access

### Content script matches

- `spectr39s.ru`

## Safety

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

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- 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).

## Similar extensions and apps

- [SpectraSync](https://chrome-stats.com/d/spectrasync)
- [Better UI](https://chrome-stats.com/d/better-ui) — 3 users
- [Dark Mode (WebExtension)](https://chrome-stats.com/d/dark-mode-webextension) — 44,923 users, 4.17 / 5
- [Custom Dark Mode](https://chrome-stats.com/d/custom-dark-mode) — 81 users, 3.87 / 5
- [Fasty flavortown extension](https://chrome-stats.com/d/fasty-flavortown-extension) — 1 users
- [Darkify](https://chrome-stats.com/d/gabriel-matias-heiler-ciraudo) — 12 users, 5.00 / 5
- [Better dark mode](https://chrome-stats.com/d/better-dark-mode) — 7 users
- [MSGDRK](https://chrome-stats.com/d/msgdrk) — 3 users
- [Messenger Dark Theme](https://chrome-stats.com/d/messenger-dark-theme) — 6,071 users, 4.60 / 5
- [Enhancer for Classroom™](https://chrome-stats.com/d/gcr-enhancer) — 93 users, 3.00 / 5
- [Spectrum Buddy](https://chrome-stats.com/d/spectrum-buddy) — 1 users, 5.00 / 5
- [Dark Mode for Outlook](https://chrome-stats.com/d/dark-mode-for-outlook) — 21 users, 2.67 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/spectrum39)