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Fitter – declarative web-data extraction,running in the browser also

Fitter – declarative web-data extraction,running in the browser also

by pyxru·Jul 26, 2026·5 points·3 comments

AI Analysis

●●●BangerBig BrainWizardry

Running the full extraction engine as WebAssembly in the browser is a clever technical flex.

Strengths
  • WASM port allows running the exact same extraction logic client-side as the CLI server.
  • Declarative JSON config replaces fragile imperative scraping scripts with stable definitions.
  • Built-in MCP server integration plugs directly into the emerging AI agent ecosystem.
Weaknesses
  • Browser-based scraping is strictly limited by CORS policies without a proxy or native binary.
  • Declarative syntax has a learning curve compared to simple Python BeautifulSoup scripts.
Target Audience

Data engineers and backend developers building ETL pipelines

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