FAQ

Yes, all tools we currently offer are completely free to use. No account registration is required.

No installation is required. You can use them immediately on any modern web browser such as Google Chrome, Safari, Firefox, Edge, etc.

Yes, they are designed with a mobile-first approach, so you can use them comfortably on smartphones and tablets.

No. All processing is done entirely within your browser (client-side). Your input data is never sent to the server. You can safely use it even for text containing confidential information.

We do not collect any personal information when you use our tools. We may only collect anonymous usage statistics for access analysis.

Since data does not leave your browser, it is technically safe. However, please use it in accordance with your company's security policy.

Yes, it supports Unicode strings including Japanese. Since it uses UTF-8 encoding internally, Japanese characters are also converted correctly.

It depends on your browser's memory, but JSON files of several megabytes can be processed without issues. For extremely large files, we recommend using a desktop application.

The character count is calculated in units of characters (Unicode code points). The byte size shows the bytes after UTF-8 encoding. Emojis and special characters are also counted correctly.

Currently, we cannot accept individual requests, but we are considering adding a request feature in the future.

We apologize for the inconvenience, but please clear your browser cache and try again. If the issue persists, please contact us with your browser version.