JSON Viewer

Paste or upload any valid JSON to format, inspect, search, analyze, and visualize it. Flow-style JSON still gets relationship detection, but the tool is now built for generic JSON too.

Pulsagi Developer Toolbox

Input

Generic JSON support, formatting, autosave, file upload, safe rendering limits, and production-friendly error handling.

Detected profileNo data loaded
JSON healthWaiting for input
Drag and drop JSON here
Works with objects, arrays, primitives, config files, API payloads, and Flow metadata
SupportsGeneric JSON, nested arrays, API responses, config documents, logs, and Salesforce Flow-style metadata.
ShortcutsCtrl/Cmd + Enter analyzes. Ctrl/Cmd + Shift + F formats. Autosave keeps drafts between refreshes.
SafeguardsTree and graph rendering are capped for large payloads so the page stays responsive.
Diagram
Tree
Formatted JSON
Insights
No JSON loaded yet.
Diagram will appear hereFlow-like JSON gets relationship visualization. Generic JSON gets a safe structural map.
0 matches
Paste JSON and click Analyze JSON.
No formatted output yet. 
Paste JSON and click Analyze JSON.
Root Type
-
Estimated Size
0 B
Max Depth
0
Graph Nodes
0

No insights yet

Load JSON to see structure summaries, type counts, graph coverage, and safe rendering notes.

What is the JSON Viewer?

The JSON viewer is a free browser-based inspection tool for developers, admins, and analysts who need to understand nested payloads quickly. It formats raw JSON, lets you search keys and values, and builds a visual structure so APIs, logs, config files, and Flow-like data are easier to review. Because the tool runs locally with no login required, it is useful when you need a safe, fast way to debug payloads during integration work, prompt design, or documentation.

How to use the JSON Viewer

  1. Paste JSON into the editor or upload a local file from your machine.
  2. Analyze the payload to inspect the tree, formatted output, diagram, and summary insights.
  3. Use search, copy, and export actions to move the cleaned structure into your next debugging or design step.

Frequently asked questions

Can I use it for generic APIs?
Yes. The viewer is designed for generic JSON as well as Flow-style structures and nested configuration payloads.
Why visualize JSON?
Visualization helps you understand relationships, depth, and repeated branches faster than scanning a dense raw payload.
Is it helpful for prompt workflows?
Yes. It is a good first step before compressing or restructuring JSON for LLM prompts and agent inputs.

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