Loading editor…
No data leaves your browser.
SparkJSONOnline JSON Viewer
Online JSON Viewer
View nested JSON as formatted text with validation. Upload local files; nothing is sent to a server.
Free SparkJSON tool — runs 100% in your browser. No signup, no upload, no paywall. This page opens in format / beautify mode.
Advertisement
Viewer-friendly formatting
Beautify for reading, validate so broken documents do not look “almost right.”
- Readable — line-oriented formatted output.
Frequently asked questions
Can I open a file from disk?
Yes. Use Upload; the file is read locally.