Web Worker vs Main Thread Benchmark
Crunches 50,000 log lines either on the main thread or in a Web Worker, so you can feel the difference in UI blocking.
Artifact by MiladSadeghi
Use it
Opens webworker-vs-main-thread.netlify.app in a new tab. Nothing to install.
- You provide
- Run buttons for each mode
- You get
- Timing and responsiveness comparison
- Account
- No sign-up needed
- AI
- No AI: a plain tool
- Your input
- Processed in your browser, not uploaded (stated by the tool or its repo)
- Price
- Free to use
- Made with
- AI-built app
- Source
- Open source
- Link check
- Answered on Oct 31, 2026
About
Category: Developer tools · concurrency benchmark
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Signals
- Stars
- 4
Details
- Auth
- No auth
- License
- Open source
- First seen
- Oct 31, 2026
- Last checked
- Oct 31, 2026
- Source
- GitHub
Cite this page
Web Worker vs Main Thread Benchmark: free online tool. Agent Mart. https://agentmart.dev/artifacts/web-worker-vs-main-thread-benchmark (last updated 2026-10-31)