Skip to content

JSON Viewer

File Viewers

View and explore JSON files as an interactive collapsible tree or formatted raw text. No upload, no account.

Drop a file here, or click to choose

Accepts .json

Rendered with Custom tree renderer. Nothing about this file is ever sent to a server — open your browser's Network tab while using this viewer and you'll see no request carrying your file's contents.

What you can do with this tool

  • Collapsible tree view for nested objects/arrays
  • Pretty-printed raw text view with syntax highlighting
  • Instant validation with clear error location on invalid JSON
  • Search keys and values
  • Copy any node or the whole document

Frequently asked questions

Can it handle large JSON files?
Yes, large files render efficiently with a virtualized tree; extremely large files are bounded by device memory.
Will it tell me if my JSON is invalid?
Yes, invalid JSON is flagged immediately with the line and character position of the error.
Can I search inside the JSON?
Yes, the search box highlights matching keys and values in the tree.
Is this the same tool as your JSON formatter?
It shares the same battle-tested parsing/formatting logic as realonlinejsonformatter.com, adapted for file viewing.
Is the file uploaded anywhere?
No, parsing and formatting happen entirely client-side.

What would you like to do next?

Popular

JSON Formatter & Validator

Format, validate, and minify JSON instantly with clear error messages.

XML Viewer

View and explore XML files as a collapsible tree or raw text. No upload, no account.

CSV Viewer

View CSV files as a clean, sortable table in your browser. No upload, no spreadsheet software needed.