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JSON Formatter - Pretty Print & Validate

ExtensionDeveloper Tools
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Overview

Instantly format, validate, and prettify JSON in a side panel. No account, no cloud, 100% local.

JSON Formatter is a local-first side panel tool for developers and operators who need to paste, validate, pretty print, inspect, and copy JSON without sending content to a server. It runs in the browser, keeps data local, and provides quick syntax feedback for everyday API and debugging work.

Details

  • Version
    0.1.0
  • Updated
    July 5, 2026
  • Offered by
    jasondeng1127
  • Size
    7.29KiB
  • Languages
    English (United States)
  • Developer
    Email
    jasondeng1127@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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