FAQ

Frequently Asked Questions

Is JSONViewerTool.com free?

Yes, the tools are free to use.

Do you store my JSON data?

No. Tool processing happens in your browser. Your data is not uploaded or stored.

Why does “Load JSON from URL” sometimes fail?

Some APIs block browser requests using CORS rules. Try a public endpoint that allows cross-origin requests.

Which tools are available?

Popular tools include JSON Validator, JSON Minifier, JSON to CSV, CSV to JSON, JSON to YAML, YAML to JSON, JWT Decoder, and more.

Can I use the tools on mobile devices?

Yes. JSONViewerTool works on modern mobile browsers. For very large payloads, desktop browsers usually provide better performance and easier editing.

Is there a file size limit?

There is no strict server limit for most tools because processing happens in your browser. Practical limits depend on your device memory and browser performance.

Do I need to create an account?

No account is required for standard usage. You can open the tool and start using it immediately.

How do I fix invalid JSON quickly?

Start with the JSON Validator to identify syntax errors, then use the formatter for readability. Common issues include missing commas, unquoted keys, and trailing commas.

Can I convert nested JSON to CSV?

Yes. Use JSON to CSV. Nested structures may be flattened into columns, so review the output before importing into reporting tools.

Which browsers are supported?

The site supports recent versions of Chrome, Edge, Firefox, and Safari. If you encounter a rendering issue, updating the browser usually resolves it.

Can I request a new tool?

Yes. Send your request from the Contact page with sample input, expected output, and the workflow it supports.

How can I report an incorrect conversion result?

Share the source input, the output you received, and the expected output structure. This makes it easier to reproduce and resolve the issue accurately.

What should I do if the page feels slow?

Try reducing input size, closing heavy browser tabs, and switching to desktop if available. For large data, split files into smaller chunks before processing.

Does JSONViewerTool support team workflows?

Yes. Teams often use these tools for API debugging, QA validation, data transformation, and reporting workflows where quick inspection and predictable output are important.