What JSON Formatter is

Open a JSON endpoint and instead of a wall of text you get an indented, collapsible, syntax-highlighted tree with clickable URLs. That is the whole product, and that is the appeal.

Feature coverage

  • Automatic JSON pretty-printing
  • Collapsible object and array nodes
  • Syntax highlighting
  • Raw and parsed toggles
  • Clickable URLs

What stands out

  • Zero-configuration usefulness
  • Listing discloses no data collection
  • Open source

Tradeoffs to know

  • Very large JSON payloads can render slowly
  • Viewing only—no schema validation or querying
  • Infrequent updates, though there is little to update

Permissions and privacy

Page access

It needs to read responses to detect and reformat JSON; scope site access if you work with sensitive APIs.

Data notes

The Chrome Web Store listing says the developer has disclosed that it will not collect or use your data.

Pricing

Free and open source. Pricing and plan limits change more often than store metadata, so use the linked developer page as the final check before subscribing.

Alternatives

AlternativeReact Developer ToolsAlternativeWappalyzer

Sources

We used the official Chrome Web Store listing and first-party developer material. Public metrics can change after the fact-check date.

  1. Chrome Web Store listing

    Store facts and privacy disclosure.

  2. JSON Formatter repository

    Open-source code and readme.

  3. Extension Reviewer methodology

    How we verify public claims and weigh tradeoffs.

View in Chrome Web Store Developer site

More in Developer tools

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