Developer
JSON Lint guide
Use this free JSON Lint to lint JSON syntax and find parse errors locally in your browser.
JSON Lint helps you lint JSON syntax and find parse errors for developers, API testers, config editors, and AI-generated JSON checks. It opens the matching Tiny Work Tools utility directly and runs in your browser after the page loads.
Best for
- checking whether pasted JSON parses before using it in code, tools, or configuration
- Fast browser-based utility work without creating an account.
- Simple checks before moving data, files, or numbers into another workflow.
Not for
- JSON Schema validation, API requests, data repair, security scanning, or production contract testing
- Regulated, certified, or production-critical decisions that require a specialist tool.
How it works
- Open the tool page and use the preselected utility.
- Enter the text, numbers, or file requested by the tool.
- Review the result and download or copy it when the output looks right.
Limits and privacy
The tool lints JSON syntax and points out parse errors. It does not validate custom schemas or repair malformed data.
Common uses
- Use JSON Lint for developers, API testers, config editors, and AI-generated JSON checks.
- Prepare a quick result before uploading, sharing, reporting, or pasting elsewhere.
- Keep small everyday utility tasks in the browser without installing desktop software.
Useful facts
- Tiny Work Tools JSON Lint runs locally in the browser after the page loads.
- The page is free to use and does not require an account.
FAQ
What does JSON Lint do?
It helps you lint JSON syntax and find parse errors using the matching Tiny Work Tools browser utility.
Does it upload my input?
The tool is designed to run locally in your browser after the page loads.
What should I check before using the result?
The tool lints JSON syntax and points out parse errors. It does not validate custom schemas or repair malformed data.