How to view a JSON file online
- Paste or drop a JSON file. Add JSON to the source editor or drag one
.jsonfile onto the workspace. - Check JSON syntax. The status bar reports whether the current source is valid JSON. If it is not, the tree cannot be rendered until the source is corrected.
- Explore the tree. Expand or collapse objects and arrays to inspect the values you need, then copy or continue editing the source.
What can this JSON tree viewer inspect?
Objects and arrays
Expand nested objects and arrays without losing the surrounding structure.
Types at a glance
Strings, numbers, booleans, null values and punctuation use distinct readable styles.
JSON parser online
Paste valid JSON to parse it in the browser and inspect the resulting tree beside the source.
Local JSON file viewer
Drop a .json file to read it into the editor and inspect it in the same browser tab.
Safe text rendering
JSON keys and values are inserted as text, never interpreted as page HTML.
Read JSON source and structure side by side
Explore objects and arrays
Each nested object or array is a branch in the collapsible JSON tree. Open the branches that matter to inspect an API response, configuration file, or saved JSON document without scanning every brace and comma in the source.
Check valid JSON before the tree renders
The viewer parses the current source before showing a tree. JSON must use quoted property names and strings, valid commas, and balanced braces or brackets. It does not repair malformed JSON or validate a document against a JSON Schema.
What happens to your JSON?
Typing, pasting, parsing, and tree rendering occur in your browser. The JSON Viewer does not make a server request to validate or show the JSON document.
Use a private window or remove sensitive values before sharing your screen. Browser extensions and other software on your device are outside the viewer's control.
JSON Viewer or JSON Formatter?
| Your goal | Best tool |
|---|---|
| Inspect a nested JSON document as a collapsible tree | Use this JSON Viewer. |
| Rewrite valid JSON with consistent two-space indentation | Use the JSON Formatter. |
| Turn JSON records into a spreadsheet-friendly file | Use JSON to CSV or JSON to Excel after checking the source. |
Working Smoothly with Multi-Gigabyte Files
SolConverter is built to keep multi-gigabyte files moving without freezing the workspace. It processes source data in manageable chunks, keeps the on-screen preview lightweight, and lets you download the completed artifact without loading the entire result at once.
Uploads, conversion, and previews remain responsive as file sizes grow. Background processing and progressive progress updates handle the heavy work, so you can work with multi-GB source files while keeping the browser workspace usable.
JSON Viewer FAQ
What is a JSON Viewer?
A JSON Viewer parses valid JSON source and displays its objects and arrays in a readable, navigable structure. This online JSON Viewer presents that structure as a collapsible tree.
Can I view a JSON file online?
Yes. Drop one .json file onto the workspace. Its text loads into the source pane, where you can inspect it as a JSON tree in the same browser tab.
Is my JSON uploaded?
No. JSON parsing, validation, and tree rendering run locally in your browser. The viewer does not make a server request for those actions.
Can I edit JSON here?
Yes. Edit the source on the left and the tree updates when the JSON is valid. Use the JSON Formatter when you want to rewrite valid source with consistent indentation.
Why does the JSON tree not appear?
The source must be valid JSON before it can be parsed into a tree. Check for quoted property names and strings, correct comma placement, and balanced braces or brackets. This viewer does not repair invalid JSON.
Does this JSON Viewer validate JSON Schema?
No. It checks whether the source is valid JSON syntax. JSON Schema validation is a separate capability that this viewer does not provide.