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JSONLint

Check and format JSON

FreeFree online tools
Visit jsonlint.com (opens in a new tab)

About JSONLint

JSONLint is a developer reference site. Paste JSON to find errors and tidy it up.

JSONLint is best for developers checking a JSON file. JSONLint is free to use. It works on the web.

Features

  • Validator

    Finds errors quickly.

  • Formatter

    Makes JSON readable.

  • Browser-based

    Nothing to install.

Questions about JSONLint

What is JSONLint?

JSONLint is a developer reference site. Paste JSON to find errors and tidy it up.

Who is JSONLint best for?

JSONLint is best for developers checking a JSON file.

What are the main features of JSONLint?

Its main features include Validator, Formatter and Browser-based.

Is JSONLint free?

Yes. JSONLint is free to use. Check its website in case that changes.

What platforms does JSONLint work on?

JSONLint works on the web.

What are the best alternatives to JSONLint?

Popular alternatives include Can I use. Compare them on the features you need most.

How do I choose a developer reference site?

Check that it’s kept up to date, and that it covers what you work with.

Alternatives to JSONLint

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