Firefox add-ons with "Writing" tag

From blank page to polished draft, Grammarly’s AI helps you write faster and stronger. Get real-time grammar fixes, tone transformations, and instant content generation right where you write in Firefox.

Spelling dictionary for the French language.

With this extension you can check text with the style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.

Dictionary with Swiss variants of German words for spellchecking in Firefox.

German dictionary ("new" orthography) for spellchecking in Firefox, extended with Austrian words

English United States (en-US) Dictionary based on GitHub: marcoagpinto/aoo-mozilla-en-dict.

A fork of Mark Tyndall's add-on, based on David Bartlett's British Dictionary R1.19 for Firefox, Thunderbird and SeaMonkey.

Russian spellchecking dictionary

Spanish/Spain Dictionary

You see the world differently and your creations stir the emotions of others.

Spell checker dictionaries for Bahasa Indonesia

Make web pages printer-friendly, convert to PDFs, or capture full page screenshots. Remove ads for clean pages ready to print or save as PDFs.

Dutch dictionary with wordslist from OpenTaal.

Spanish dictionary for Argentina.

Diccionario para México.

For some reason, Mozilla doesn't have a Canadian localization team, but I know that even the British dictionary doesn't quite cut it for the truly patriotic.

A strict British-English spell checker dictionary for Firefox, Thunderbird and SeaMonkey. This dictionary only includes words conforming to the preferred standard of British-English spelling.

View definitions easily as you browse the web. Double-click any word to view its definition in a small pop-up bubble. It also supports Spanish, German, French language alongside English. Enjoy Reading Uninterrupted!!!.

European Portuguese (pt-PT) Dictionary

ATTENTION : ce correcteur n'utilise pas l'orthographe actuelle (ni avant, ni après 1990) mais celle proposée par l'association Érofa ! L'outil écrit "ortografe" et non "orthographe", ce n'est pas une erreur mais un choix.

This extension is based on László Németh's Hungarian Dictionary

Integrate Antidote with Firefox to proofread your writing in real time, to check your spelling and grammar, and to consult the dictionaries and language guides, all without ever leaving the browser!

Convert Web Novels (and other web pages) into an EPUB for offline reading. Works with many sites, including: 1. ArchiveOfOurOwn.org 2. FanFiction.net. 3. royalroadl.com

Free Catalan (general version) spelling dictionary.

Spanish (Mexico) spell checker dictionary