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JSON Formatter Classic

callumlocke.com
ExtensionDeveloper Tools93 users
Item media 2 (screenshot) for JSON Formatter Classic
Item media 1 (screenshot) for JSON Formatter Classic
Item media 2 (screenshot) for JSON Formatter Classic
Item media 1 (screenshot) for JSON Formatter Classic
Item media 1 (screenshot) for JSON Formatter Classic
Item media 2 (screenshot) for JSON Formatter Classic

Overview

Makes JSON easy to read

Automatically prettifies any JSON URL opened in a browser tab. NOTE: JSON Formatter Classic is built from the v0.8 branch (available on GitHub). I'm publishing it as an alternative for those who aren't interested in the new features I'm planning for JSON Formatter in 2026. This won't receive any further updates other than bugfixes. ______________________ FEATURES šŸŽļø **Fast** ā€” even on very long JSON pages šŸŒ— Dark mode support šŸŽØ Syntax highlighting šŸ“Ž Code folding and indent guides šŸ”— Clickable URLs šŸ”Œ Raw/Parsed toggler Pro tips: šŸŖ„ Hold down Ctrl (or āŒ˜ on Mac) when clicking to fold/unfold all adjacent siblings šŸŖ„ Open the Dev Tools console and type `json` if you want to explore the parsed JSON ______________________ SOURCE CODE: https://github.com/callumlocke/json-formatter FOLLOW ME: https://x.com/callumlocke

Details

  • Version
    0.8.1
  • Updated
    January 12, 2026
  • Size
    20.73KiB
  • Languages
    English (United Kingdom)
  • Developer
    Callum Locke
    36 Addington Grove London SE26 4JX GB
    Website
    Email
    callum.locke@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

Support

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