Building a Privacy-First Code Formatter: My Architecture Decisions

I’m exploring whether client-side code processing is the future of developer tools. Here’s my approach with Formatic:

The Problem
Most code formatters send your code to their servers. As developers, we’re trusting third parties with proprietary code.
…


This content originally appeared on DEV Community and was authored by Jean

I'm exploring whether client-side code processing is the future of developer tools. Here's my approach with Formatic:

The Problem
Most code formatters send your code to their servers. As developers, we're trusting third parties with proprietary code.

My Solution: Client-Side First

  • Formatting happens entirely in the browser
  • Zero data sent to servers (even for translation via secure token proxy)
  • Open architecture for transparency

Current MVP Architecture 

// Simplified flow
userCode => Web Worker => Formatted Output
// No server round-trip!

Looking for Technical Feedback

  • How would you improve this architecture?
  • What security concerns should I address?
  • Interested in collaborating?

Try the MVP: formatic.xyz - it's frontend-only but shows the vision.

Question for the community: Would you contribute to an open-source, privacy-focused formatter?


This content originally appeared on DEV Community and was authored by Jean


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Jean | Sciencx (2025-09-27T02:49:40+00:00) Building a Privacy-First Code Formatter: My Architecture Decisions. Retrieved from https://www.scien.cx/2025/09/27/building-a-privacy-first-code-formatter-my-architecture-decisions/

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