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Head-to-head · Code Transpilers

SWC vs TeaVM

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score SWC #2 in Code Transpilers 9.2/10 Free plan Free plan✓ 0 of 4 features Visit SWC
TeaVM #5 in Code Transpilers 8.6/10 Free plan Free plan✓ 2 of 4 features Visit TeaVM

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

Our verdict

  • Highest scoreSWC · 9.2/10
  • Free planboth
  • Most featuresTeaVM · 2 of 4

SWC scores higher on our rubric for code transpilers: 9.2 against 8.6 out of 10; our editors rank them #2 and #5.

SWC is the better fit for fast JavaScript and TypeScript build pipelines. TeaVM is the better fit for java teams targeting JavaScript or WebAssembly.

  • SWC fits best

    Fast JavaScript and TypeScript build pipelines

  • TeaVM fits best

    Java teams targeting JavaScript or WebAssembly

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Side by side

Feature SWC 9.2/10 Visit ↗ TeaVM 8.6/10 Visit ↗
At a glance
Editor score 9.2 8.6
Ranking #2 in Code Transpilers #5 in Code Transpilers
Best for Fast JavaScript and TypeScript build pipelines Java teams targeting JavaScript or WebAssembly
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Self-hosted
Support Community, Docs Email, Docs
Integrations 6 integrations 7 integrations
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features SWC 0/4 · TeaVM 2/4
Syntax-version conversion Not checked yet Not checked yet
Intermediate output Not checked yet Not checked yet
CLI access Not checked yet ✓ (best)
API access Not checked yet ✓ (best)
Specs
Source languages Not checked yet Not checked yet
Target languages Not checked yet Not checked yet
Conversion mode Not checked yet Source-to-source
Our review
Pros
  • Compiles JavaScript and TypeScript, with minification and source maps
  • Supports tree shaking, dead-code elimination, and shared-dependency chunking
  • Integrates with Next.js, webpack, Rspack, Jest, Parcel, and Deno
  • Compiles Java bytecode to JavaScript and Java or Kotlin to WebAssembly GC
  • Maven and Gradle integration with JavaScript interoperability
  • Includes source maps, debugging, development servers, and browser testing
Cons
  • The spack bundler is documented as slated for removal in v2
  • Bundling depends on spack, so its future path warrants attention
  • Support channels are community and documentation
  • Works within TeaVM’s supported Java API constraints
  • Focused on new web applications and selected code reuse, not every Java workload
  • Requires self-hosted deployment
Our verdict

SWC is an open-source, Rust-based compiler and build tool for JavaScript and TypeScript projects. It transforms modern code into browser-compatible output and offers minification, source maps, tree shaking, and bundling through its spack…

Read the review →

TeaVM is an open-source ahead-of-time compiler for Java, Kotlin, and Scala developers who want to build web front ends or reuse selected backend code in browser applications. It compiles Java bytecode to JavaScript, supports Java and…

Read the review →
  1. SWCCode Transpilers 9.2Free plan
  2. TeaVMCode Transpilers 8.6Free plan

Strengths and trade-offs

  • SWC — where it wins

    • Compiles JavaScript and TypeScript, with minification and source maps
    • Supports tree shaking, dead-code elimination, and shared-dependency chunking
    • Integrates with Next.js, webpack, Rspack, Jest, Parcel, and Deno

    Where it doesn't

    • The spack bundler is documented as slated for removal in v2
    • Bundling depends on spack, so its future path warrants attention
    • Support channels are community and documentation

  • TeaVM — where it wins

    • Compiles Java bytecode to JavaScript and Java or Kotlin to WebAssembly GC
    • Maven and Gradle integration with JavaScript interoperability
    • Includes source maps, debugging, development servers, and browser testing

    Where it doesn't

    • Works within TeaVM’s supported Java API constraints
    • Focused on new web applications and selected code reuse, not every Java workload
    • Requires self-hosted deployment
  • SWC9.2/10 · Free plan

    An open-source compiler with minification and bundling for JavaScript and TypeScript workflows.

    Visit SWCFull verdict →
  • TeaVM8.6/10 · Free plan

    A free, open-source compiler for Java teams building browser applications or native targets.

    Visit TeaVMFull verdict →

More comparisons

All code transpilers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update