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JSON Editor Online

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What JSON Editor Online is

JSON Editor Online is a web-based workspace for viewing and changing JSON. It can format, repair, query, transform, and validate JSON, and it includes schema validation plus JSON diff and compare. You can work in tree, text, or table mode. Tree mode supports navigation and editing with a keyboard or mouse, including cut, copy, and paste. Query options listed for the editor are JSON Query, JMESPath, JSONPath, Lodash, and JavaScript. The service has a free plan and uses a freemium pricing model. For application developers, the maker publishes Svelte and vanilla JavaScript editor packages. The svelte-jsoneditor library is released under the ISC license, and its documentation points to GitHub for the library and development resources. The listed capability set does not include JSONPath querying or jq querying, despite JSONPath appearing among the query language options.

Who it suits

It suits people who need browser-based JSON editing, validation, comparison, or transformation. Developers can also use the published editor packages in applications.

What it does well

  • Free plan available
  • Tree, text, and table editing modes
  • Schema validation and JSON compare
  • Multiple query language options
  • Svelte and JavaScript packages

What to know first

  • JSONPath querying listed as unavailable
  • jq querying listed as unavailable
  • Web platform only

Verdict

JSON Editor Online combines visual editing modes with validation, comparison, and several query choices in a browser. Its free plan and application packages broaden its use, while the listed JSONPath and jq limitations matter for query-focused work.

Facts from JSON Editor Online's own pages

Editing features
Tree mode supports editing and navigating JSON with keyboard or mouse, including cut, copy, and paste. · github.com, 4 Oct 2026
Editing modes
The editor supports tree, text, and table modes. · github.com, 4 Oct 2026
Integration
The maker publishes Svelte and vanilla JavaScript editor packages for use in applications. · github.com, 4 Oct 2026
Open source
The svelte-jsoneditor library is released under the ISC license. · github.com, 4 Oct 2026
Purpose
JSON Editor Online is a web-based tool for viewing, editing, formatting, repairing, querying, transforming, and validating JSON. · github.com, 4 Oct 2026
Query languages
The editor supports JSON Query, JMESPath, JSONPath, Lodash, and JavaScript query languages. · github.com, 4 Oct 2026
Support
The project documentation points users to its GitHub repository for the library and its development resources. · github.com, 4 Oct 2026

Where JSON Editor Online stands on Freedom251

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