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JSONEditor.io

JSONEditor.io is a free browser-based tool for editing, viewing, formatting, validating, and converting JSON.

Place
#16 of 29
Score
6.0
JSONEditor.io's website

What JSONEditor.io is

JSONEditor.io is a free browser-based tool for editing, viewing, formatting, validating, and converting JSON. Its Monaco Editor interface offers text, tree, and table views, alongside schema validation, comparison, repair, querying, and transformation tools. You can convert between JSON, YAML, CSV, and TypeScript. The homepage states a maximum file size of 512 MB, and the maker says the editor can work offline with JSON files. The privacy policy says documents and preferences stay in the browser unless you choose to share them. The homepage also describes cloud storage and shareable links, with private cloud documents accessible only to their owner. AI assistance can generate, modify, and fix JSON, though the maker notes that it may involve external processing under third-party privacy policies. The site may collect anonymous usage statistics and uses Google AdSense and advertising cookies. Its Free plan is listed as free, with no signup, usage limits, or premium tiers.

Good

  • Provides text, tree, and table editing modes
  • Converts JSON, YAML, CSV, and TypeScript
  • Supports schema validation and document comparison
  • Can be used offline on JSON files

Watch out

  • AI assistance may involve external processing
  • The site uses advertising cookies and Google AdSense

Who it suits

It suits developers, data analysts, DevOps engineers, and API designers who need browser-based JSON editing or conversion. It can also fit users who want to work offline or keep documents in local browser storage.

Verdict

JSONEditor.io combines a broad set of JSON tools in a browser editor with a free plan and no signup. Consider its AI processing and advertising disclosures if those matter for your work.

Plans and prices

From JSONEditor.io's own pricing page, checked 8 Oct 2026.

All about pricing
PlanPriceWhat it gives you
FreeFreeNo signup · no usage limits or premium tiers · up to 512 MB stated on homepage

The facts

Each one read from JSONEditor.io's own pages, with the date it was checked.

What it does

AI assistance
The editor offers AI assistance to generate, modify, and fix JSON; the maker says AI use may involve external processing.checked 8 Oct 2026
Analytics and advertising
The privacy policy says the site may collect anonymous usage statistics and uses Google AdSense and cookies for advertising.checked 8 Oct 2026
Cloud sharing
The homepage describes cloud storage and shareable links, and says private cloud documents are accessible only to their owner.checked 8 Oct 2026
Conversions
The editor supports conversion between JSON, YAML, CSV, and TypeScript.checked 8 Oct 2026
Editing experience
The maker describes a VS Code-like editing experience powered by Monaco Editor.checked 8 Oct 2026
File size
The homepage states a maximum file size of 512 MB.checked 8 Oct 2026
Intended users
The maker identifies developers, data analysts, DevOps engineers, and API designers as users of the editor.checked 8 Oct 2026
Offline
The maker says the editor can be used offline to work on JSON files.checked 8 Oct 2026
Other features
The maker lists schema validation, JSON comparison, repair, querying, and transformation features.checked 8 Oct 2026
Privacy
The privacy policy says documents and preferences are stored locally in the browser and do not leave the device unless the user chooses to share them.checked 8 Oct 2026
Purpose
JSONEditor.io is a free, browser-based editor for editing, viewing, formatting, validating, and converting JSON.checked 8 Oct 2026
Support
The maker invites feedback and support inquiries by email at [email protected].checked 8 Oct 2026
Third-party processing
The privacy policy says data used with third-party services such as AI assistants may be processed under those providers’ privacy policies.checked 8 Oct 2026
Views
Users can view and edit JSON in text, tree, and table modes.checked 8 Oct 2026

The company

Maker
JSONEditor.io is a product of Polyxmedia Ltd.checked 8 Oct 2026

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