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Browser Extensions · head to head

LanguageTool vs Stylus

LanguageTool logo

LanguageTool

Browser Extensions

Grammar and spell checker for 25+ languages

From
Free
Rated
-
Full reviewWebsite
Stylus logo

Stylus

Browser Extensions

Restyle the web with custom CSS

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: LanguageTool free tier limited to basic spelling and simple punctuation; advanced punctuation and style issues caught only on premium; Stylus crashes and instability when applying certain styles
  • They diverge on capability: LanguageTool covers Multi-language support, Stylus covers Custom CSS injection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which LanguageTool and Stylus actually diverge.

Attributes where LanguageTool and Stylus differ
AttributeLanguageToolStylus
Pricing modelfreemiumfree
PlatformsWeb editor, Windows desktop app, macOS desktop app, Chrome extension, Firefox extension, Edge extension, Safari extension, Opera extension, Google Docs, Microsoft Word, iOS appChrome, Firefox, Edge, Opera
Founded20032017

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Browser Extensions).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in LanguageTool

  • Multi-language support
  • Grammar checking
  • Style suggestions
  • Personal dictionary
  • Safari support

Only in Stylus

  • Custom CSS injection
  • Style management
  • userstyles.world integration
  • Built-in editor

Both cover

  • Chrome support
  • Firefox support
  • Edge support
  • Opera support

What people use each for

The jobs each tool is most often brought in to do.

LanguageTool

  • Grammar and spelling correction across web and desktopnot Stylus
  • Style and clarity improvementsnot Stylus
  • Multilingual writing assistancenot Stylus

Stylus

  • Customizing website appearance with community-created CSS themesnot LanguageTool
  • Writing personal style overrides for specific websitesnot LanguageTool
  • Managing multiple styles across different websites automaticallynot LanguageTool
  • Searching and installing user-styles for current websitesnot LanguageTool
  • Migrating style collections from Stylish extensionnot LanguageTool

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

LanguageTool

  • Free tier limited to basic spelling and simple punctuation; advanced punctuation and style issues caught only on premium
  • Picky Mode (advanced typography) unavailable on free plan
  • Specific pricing not displayed on main page; requires navigation to purchase flow

Stylus

  • Crashes and instability when applying certain styles
  • No visual element selector tool for identifying page elements to style
  • Security risk if downloading and applying untrusted user-created styles

Pricing, plan by plan

LanguageTool

Free
  • BasicFree
    • 2,000 character limit per text
    • 3 AI paraphrasing requests per day
    • Basic grammar and spelling checks
  • Premium$null/month
    • 150,000 character limit per text
    • Unlimited AI paraphrasing
    • 20,000+ grammar and style checks
  • Teams$null/month
    • Per-user, per-month pricing
    • 2-1000+ users
    • Team Style Guide

Stylus

Free
  • FreeFree
    • Custom CSS
    • Style library
    • Style editor

Which should you pick?

Choose LanguageTool if

  • You need multi-language support.
  • You want to start without paying.
  • You work on Web editor, Windows desktop app, macOS desktop app, Chrome extension, Firefox extension, Edge extension, Safari extension, Opera extension, Google Docs, Microsoft Word, iOS app.
  • You also want grammar checking.
LanguageTool review

Choose Stylus if

  • You need custom css injection.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want style management.
Stylus review

Questions people ask

Is LanguageTool or Stylus better?
Neither clearly leads. LanguageTool starts at Free and Stylus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, LanguageTool or Stylus?
LanguageTool starts at Free and Stylus at Free.
Does LanguageTool or Stylus run on more platforms?
LanguageTool runs on Web editor, Windows desktop app, macOS desktop app, Chrome extension, Firefox extension, Edge extension, Safari extension, Opera extension, Google Docs, Microsoft Word, iOS app. Stylus runs on Chrome, Firefox, Edge, Opera.
Can I use LanguageTool for free?
Both have a free tier, so you can try either at no cost before committing.
What is LanguageTool best used for?
LanguageTool is most often used for grammar and spelling correction across web and desktop, style and clarity improvements, multilingual writing assistance. Of those, grammar and spelling correction across web and desktop and style and clarity improvements are not what Stylus is typically brought in for.
What can LanguageTool do that Stylus cannot?
LanguageTool covers Multi-language support, Grammar checking, Style suggestions, Personal dictionary. Stylus covers Custom CSS injection, Style management, userstyles.world integration, Built-in editor. Both handle Chrome support, Firefox support, Edge support, Opera support.

Answered from the vendors’ own pages

LanguageTool: Does LanguageTool have a free version?

Yes, LanguageTool Basic is free with a 2,000 character limit per text field and 3 AI paraphrasing requests per day for basic grammar and spelling checks.

Source
Stylus: Is Stylus free?

Yes. Stylus is completely free and open-source, available for Chrome, Firefox, Edge, and Opera browsers.

Source
LanguageTool: What does LanguageTool Premium offer?

LanguageTool Premium increases the character limit to 150,000 per text field, provides unlimited AI paraphrasing, and includes 20,000+ advanced grammar and style checks. Multiple billing options are available including monthly, quarterly, annual, and 2-year plans.

Source
Stylus: Can I use Stylus to change the browser UI?

No. Due to WebExtensions security restrictions, Stylus can only customize website pages, not the browser interface itself.

Source
LanguageTool: Does LanguageTool offer a money-back guarantee?

Yes, LanguageTool provides a 14-day money-back guarantee on all Premium packages with no period of notice required; cancel anytime.

Source
Stylus: What CSS pre-processors does Stylus support?

Stylus supports CSS, LESS, and Stylus syntax with built-in linting using Stylelint and CSSLint-mod with customizable rules.

Source
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