JSONLint

Validates and formats JSON and reports syntax errors.

Artifact by JSONLint

IndexedLicense unknownDeveloper toolsNo sign-up

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Opens jsonlint.com in a new tab. Nothing to install.

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You provide: JSON
You get: Validity and formatted JSON
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Hosted web tool
Source: Source code not public
Link check: Answered on Nov 1, 2026

About

JSONLint is a hosted web tool in the developer tools category (json validator). It opens in your browser, so there is nothing to install. You provide JSON and get validity and formatted JSON. It needs no account. It is a plain tool: no AI model is involved.

Category: Developer tools · json validator

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Details

Auth: No auth
License: License unknown
Website: jsonlint.com/
First seen: Oct 31, 2026
Last checked: Nov 1, 2026
Source: artifact-seed

Cite this page

JSONLint: free online tool. Agent Mart. https://agentmart.dev/artifacts/jsonlint (last updated 2026-11-01)