Inspect nested structure
Searchable tree and raw editor views make nested objects, arrays, keys, values, and record boundaries easier to inspect.
FREE BROWSER-LOCAL FILE TOOLS
Find a JSON value by its exact path.
Open or paste JSON, inspect its structure, edit, format or minify it. Your contents stay in this browser.
Step 1: open your file
Start with a complete JSON value. Contents stay in this browser.
- In Tree, enter a JSON Pointer such as /0/project.
- Inspect the matched value and its path.
Paste JSON
File contents stay in this browser. Download changes before refreshing or closing the tab.
Edit, format and validate
Open the Tree tab and resolve an RFC 6901 JSON Pointer such as /projects/0/name. Syntax problems are reported without sending the document to a server.
Choose the matching format
Use JSON for one complete value, JSONL or NDJSON for one JSON value per line.
Frequently asked questions
How do I open a JSON file?
Choose or drop a .json file, paste a complete JSON value, or try the sample. The editor opens with your input ready for Source, Tree or Table inspection.
Can I edit and download my JSON?
Yes. Edit the source or structure, review validation feedback, then download your edited JSON. Save a download before refreshing or closing the tab.
Does my JSON file get uploaded?
Local editing processes selected and pasted contents in your browser. Optional Assistance sends your goal and only the context you explicitly prepare and include, such as a selected subtree or observed query field metadata, to OpenRouter and the configured model provider. Its preview shows exactly what is included. Ordinary page and asset requests also reach the hosting provider.