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Head-to-head · Code Formatting Tools

Prettier vs Scalafmt

  • Updated Sep 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Prettier #2 in Code Formatting Tools 8.2/10 Open source ✓ 3 of 4 features Visit Prettier
Scalafmt #8 in Code Formatting Tools 6.6/10 Free plan Free plan✓ 4 of 4 features Visit Scalafmt

Prettier leads on 0 checks, Scalafmt on 2, and 3 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorePrettier · 8.2/10
  • Free planonly Scalafmt
  • Most featuresScalafmt · 4 of 4

Prettier scores higher on our rubric for code formatting tools: 8.2 against 6.6 out of 10; our editors rank them #2 and #8.

Scalafmt offers free plan; Prettier doesn't publish it. Scalafmt offers changed-lines formatting; Prettier doesn't publish it.

Prettier is the better fit for web development teams. Scalafmt is the better fit for scala projects using build tools.

  • Prettier fits best

    Web development teams

  • Scalafmt fits best

    Scala projects using build tools

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. It never changes our verdict. How we rank.

Side by side

Feature Prettier 8.2/10 Visit ↗ Scalafmt 6.6/10 Visit ↗
At a glance
Editor score 8.2 6.6
Ranking #2 in Code Formatting Tools #8 in Code Formatting Tools
Best for Web development teams Scala projects using build tools
Pricing model Free Free
Starting price Not published Not published
Free plan Not published ✓ (best)
Free trial — —
Deployment Self-hosted Self-hosted, Desktop
Support Docs Community, Docs
Integrations 7 integrations 12 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Prettier 3/4 · Scalafmt 4/4
Editor integration ✓ ✓
Ignore files ✓ ✓
Changed-lines formatting Not published ✓ (best)
Library API ✓ ✓
Specs
Supported languages JavaScript, JSX, Angular, Vue, Flow, TypeScript, CSS, Less, SCSS, HTML, Ember/Handlebars, JSON, GraphQL, Markdown, GFM, MDX v1, YAML, LWC, MJML Scala 2, Scala 3, sbt, Scala scripts
Supported platforms Browser and JavaScript API CLI, editors, build tools, standalone library
License model Open_source Open_source
Our review
Pros
  • Covers JavaScript, TypeScript, CSS, HTML, JSON, GraphQL, Markdown, and YAML
  • Works across major editors, command line, CI, pre-commit hooks, and JavaScript APIs
  • Supports ignore rules, formatting checks, and plugins for additional languages
  • Supports Scala 2 and Scala 3 dialects
  • Integrates with sbt, Maven, Gradle, and Mill
  • Offers editor, changed-file, and library API options
Cons
  • Self-hosted deployment requires teams to manage how it runs
  • Support is provided through documentation
  • Does not include AI features
  • Focused on Scala, sbt, and Scala scripts rather than many languages
  • Configuration is managed through a .scalafmt.conf file
  • Not a hosted commercial service with paid support tiers
Our verdict

Prettier is an open-source code formatter for teams that want a consistent style across web-language source files. It parses and reprints supported files, including JavaScript, JSX, Angular, Vue, Flow, TypeScript, CSS, Less, SCSS, HTML,…

Read the review →

Scalafmt is an open-source code formatter for Scala projects, including Scala 2, Scala 3, sbt, and Scala script files. It reformats code according to settings in a .scalafmt.conf file and can run through the command line, editors, build…

Read the review →
  1. PrettierCode Formatting Tools 8.2Open source
  2. ScalafmtCode Formatting Tools 6.6Free plan

Strengths and trade-offs

  • Prettier — where it wins

    • Covers JavaScript, TypeScript, CSS, HTML, JSON, GraphQL, Markdown, and YAML
    • Works across major editors, command line, CI, pre-commit hooks, and JavaScript APIs
    • Supports ignore rules, formatting checks, and plugins for additional languages

    Where it doesn't

    • Self-hosted deployment requires teams to manage how it runs
    • Support is provided through documentation
    • Does not include AI features

  • Scalafmt — where it wins

    • Supports Scala 2 and Scala 3 dialects
    • Integrates with sbt, Maven, Gradle, and Mill
    • Offers editor, changed-file, and library API options

    Where it doesn't

    • Focused on Scala, sbt, and Scala scripts rather than many languages
    • Configuration is managed through a .scalafmt.conf file
    • Not a hosted commercial service with paid support tiers

More comparisons

All code formatting tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update