Frequently Asked Questions
Last updated: July 22, 2026
Quick answers about privacy, offline use, and how JSON Editor by Vektosys works. Still stuck? Contact us.
Is my JSON uploaded to a server?
No. JSON Editor processes formatting, validation, conversion, and related operations locally in your browser. Your documents are not uploaded to Vektosys for processing, and we do not store them on a backend.
Do I need an account?
No. There is no signup or login. Open the site and start working immediately.
What is stored in my browser?
Optional preferences such as theme, indent size, and editor settings may be saved in localStorage. If auto-save is enabled, a local draft or recent items list may also be kept on your device only. You can clear site data anytime in your browser settings.
Does JSON Editor work offline?
Yes for core flows once the progressive web app (PWA) assets are cached. Install the app or revisit after first load; if you go offline you may see our offline page for uncached routes. See /offline for details.
Is the service free?
Core JSON Editor are free to use. Optional analytics or advertising may appear based on your cookie consent; they are not required for local processing.
Which formats can I convert?
We offer converters between JSON and formats such as XML, YAML, CSV, Excel-friendly tabular data, HTML tables, Markdown, SQL, TypeScript types, and other code-oriented outputs. Browse /converters for the full list.
How large a JSON file can I process?
Limits depend on your device memory and browser. Extremely large files may slow or freeze the tab. For huge datasets, prefer streaming or desktop tools; for typical API payloads and configs, the in-browser editor works well.
Can I use this for confidential production data?
Because processing is local, the risk of uploading to our servers is removed by design. You should still trust your device, avoid untrusted browser extensions, and follow your employer’s data policies. We do not provide a contractual data-processing guarantee beyond what is stated in our Privacy Policy.
How do I report a bug or request a feature?
Email jsoneditor@vektosys.com or use the contact form at /contact. Include steps to reproduce, your browser, and a redacted sample if helpful.
Where are legal documents?
Privacy Policy, Terms, Cookie Policy, Disclaimer, DMCA, and Accessibility Statement are linked in the site footer under Legal.