Terms of Use

These terms and conditions describe the rules for using the JSON Fast website, located at https://jsonfast.net/.

By accessing this site, we consider that you agree to the terms and conditions below. Do not continue to use JSON Fast if you disagree with the terms and conditions described in this document.

About the Tools

JSON Fast offers a JSON formatter and validator, a JSON minifier, a JSON diff tool, a JWT decoder, a JWT encoder, an XML to JSON converter, a JSON to XML converter, a JSON to Base64 encoder, a Base64 to JSON decoder, a JSON to YAML converter, a YAML to JSON converter, a CSV to JSON converter, and a JSON to CSV converter, all of which work 100% in your browser. The content you process, including JSON, XML, YAML, CSV, and Base64 data, JSON Web Tokens, and signing secrets, is not sent to or stored on our servers. The tools are offered free of charge, on an "as is" basis.

For information about the use of cookies, tracking, and the processing of personal data, please refer to our Privacy Policy page.

License

Unless otherwise stated, JSON Fast and its licensors own the intellectual property of all material published on JSON Fast, including the tools, the articles, and the site content. All intellectual property rights are reserved. You must not reproduce, redistribute, or commercially exploit this material without our authorization.

Liability for Content

We will not be held legally liable for any content submitted or processed by you through the tools. You agree to protect and defend us against all claims raised as a result of your use of the site. You agree not to use JSON Fast for any unlawful purpose or one that infringes, violates, or advocates the violation of the rights of third parties.

When you load JSON from a URL, the request goes straight from your browser to that third-party address. We have no control over, and are not responsible for, the content, availability, or practices of any site you load data from.

JSON Web Tokens and signing secrets are credentials. You are solely responsible for the tokens and secrets you choose to enter in the JWT decoder and for keeping them safe. The decoder is a debugging aid: a "Valid JWT" or "Signature Verified" result is not a security assessment and must not be relied on to authorize access or to make security decisions.

Base64 is an encoding, not encryption: anyone who has the encoded text can read what is inside it. Data carried in Base64 often includes credentials, such as API keys, service account files, and secrets. You are solely responsible for the content you choose to enter in the JSON to Base64 encoder and the Base64 to JSON decoder, and for where you store or share the result.

YAML is widely used for configuration files, which often carry credentials, such as passwords, API keys, and deployment secrets. You are solely responsible for the content you choose to enter in the JSON to YAML converter and the YAML to JSON converter, and for where you store or share the result. The converters are a formatting aid: a successful conversion is not a validation of your configuration and must not be relied on as one.

CSV files often hold personal data about other people, such as customer lists and exports from other systems. You are solely responsible for the content you choose to enter or load in the CSV to JSON converter and the JSON to CSV converter, for having the right to process it, and for where you store or share the result. The "Escape formulas" option is a convenience, not a security guarantee: you should review any file before opening it in spreadsheet software.

The articles and other materials published on JSON Fast are for informational and educational purposes only. Although we strive to keep them accurate and up to date, we do not guarantee the accuracy, completeness, or timeliness of the information they contain. Any decision made based on this content is your sole responsibility.

Reservation of Rights

We reserve the right to correct and change these terms and conditions, as well as to modify, suspend, or discontinue any of the tools, at any time and without prior notice. Therefore, we recommend that you review these Terms of Use regularly to stay up to date.

Links to third-party sites

Our site may contain links to third-party sites. These links are provided solely for your convenience. We have no control over the content of these sites and are not responsible for their privacy practices or for the content they make available.

If you find any link on our site that is offensive or inappropriate, you may contact us at any time. We will review requests for removal, but we are not obligated to remove them or to respond directly.

Disclaimer of Liability

The tools are provided on an "as is" basis, without warranties of any kind. We do not guarantee that any result produced by the tools (formatting, validation, minification, comparison, conversion, Base64 encoding and decoding, token decoding, token signing, signature verification, or otherwise) is correct, complete, or fit for a particular purpose, nor that the site will remain available or free of errors. Use of the tools is entirely your responsibility, and you should review the results before relying on them. To the maximum extent permitted by law, we exclude all representations, warranties, and conditions relating to this site and its use. Since the site and the tools are offered free of charge, we will not be liable for losses or damages of any nature arising from your use.

Jurisdiction

These Terms are governed by Brazilian law. The courts of the District (Comarca) of Cordeiro/RJ, Brazil, are elected to settle any disputes arising from this document, with express waiver of any other, however privileged it may be.

Last updated: October 13, 2026