# Automatic Spelling Language

> Automatically changes the dictionary used for spell checking based on the language of text in input fields.

Canonical page: [https://chrome-stats.com/d/automatic-spelling-language](https://chrome-stats.com/d/automatic-spelling-language)

## Overview

- **ID:** `automatic-spelling-language`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Jacob Hjort Bundgaard
- **Category:** language-support,social-communication
- **Daily users:** 550
- **Weekly downloads:** 9
- **Rating:** 4.04 / 5 (25 ratings)
- **Version:** 1.0
- **Last updated:** 2019-04-20
- **First published:** 2019-04-20
- **Size:** 79 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/automatic-spelling-language/)
- **Website:** [https://github.com/kimsey0/FirefoxAutoDict/issues](https://github.com/kimsey0/FirefoxAutoDict/issues)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/automatic-spelling-language/privacy/](https://addons.mozilla.org/firefox/addon/automatic-spelling-language/privacy/)

## Description

**Automatic Spelling Language** is a Chrome extension that intelligently switches the spell checking dictionary based on the detected language within text input fields. Utilizing the Compact Language Detection (CLD2) framework integrated into Firefox, it identifies the input text language to apply the correct dictionary automatically, enhancing multilingual typing experiences without sending data to external servers.

The extension supports over 60 languages including English, Spanish, Chinese, Arabic, Russian, and more. It's tested on popular platforms like GitHub, Gmail, Reddit, Stack Exchange, Trello, and Wikipedia, ensuring seamless operation across common sites. Users can reset or adjust content preferences if manual dictionary selections have overridden automatic detection, providing full control over spell check behavior. Perfect for multilingual users, it enhances productivity by removing manual dictionary switching while maintaining privacy and accuracy.

## Rankings

- #4,742 — Overall
- #201 — Language Support
- #6 — spelling
- #32 — automation
- #40 — automate
- #63 — input

## Permissions and access

### Content script matches

- `<all_urls>`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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).

## Review summary

Users appreciate that the add-on automates switching spellcheck languages and saves manual switching; many say it works well. However, multiple reviewers report inconsistent behavior (fails, needs restarts/reinstalls), site-specific mis-detections (notably Reddit/Facebook), delayed activation, and perceived degradation or lack of maintenance over time.

### Pros

- Automatically detects and switches spellcheck language, removing the need to switch dictionaries manually.
- Many users report it works well and is a practical solution for multi-language typing.
- For some people it functions reliably after initial setup or a restart.

### Cons

- Unreliable or inconsistent: several reviewers report it fails, stops working, or requires reinstalling/restarting to recover.
- Site-specific mis-detection or overrides of manual language settings (reported especially on Reddit and Facebook/old Reddit text areas).
- Delayed activation: may need you to type a few words before it switches, so it’s not always instant while typing.
- Appears to degrade for some users over time; a few reviewers suspect it is no longer well maintained.

## Similar extensions and apps

- [Auto Spell Checker Language Switcher](https://chrome-stats.com/d/auto-spell-checke) — 7 users
- [LanguageTool Website Spellcheck - LTWS](https://chrome-stats.com/d/lt-website-spellcheck) — 503 users, 3.00 / 5
- [dictionary configurer](https://chrome-stats.com/d/dictionary-configurer) — 2 users
- [Duh Autocorrection](https://chrome-stats.com/d/duh-autocorrection) — 1 users
- [SpellScout](https://chrome-stats.com/d/spellscout)
- [Language Detection](https://chrome-stats.com/d/language-detection) — 2 users
- [Language Improver](https://chrome-stats.com/d/language-improver) — 5 users
- [Spell Checker](https://chrome-stats.com/d/spell-checker) — 321 users, 3.00 / 5
- [English (US) Dictionary](https://chrome-stats.com/d/english-us-dictionary) — 326,591 users, 4.29 / 5
- [Spell Checker](https://chrome-stats.com/d/spells-checker) — 33 users
- [MathSpell](https://chrome-stats.com/d/mathspell) — 1 users
- [Lachit - an Assamese Spell Checker](https://chrome-stats.com/d/assamese-spell-checker) — 56 users, 4.17 / 5

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