Input
{"level":"error","ctx":{...}}Output
Interactive collapsible tree view
Developer Tools
Collapsible JSON and NDJSON Log Viewer
View JSON and NDJSON logs as a collapsible, syntax-colored tree. Expand or fold nodes to inspect deep structured logs locally in the browser.
JSONLogsDeveloper
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开发工具
JSON Log Viewer
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Use cases
- Inspect large alert payloads with hundreds of fields
- Read NDJSON service exports line by line
- Browse deeply nested API responses
How to use
- Paste a single JSON object or NDJSON lines
- Click render to build the collapsible tree
- Expand or fold nodes to locate fields
Example input and output
FAQ
How is multi-line input handled?
NDJSON (one JSON object per line) is parsed line by line; a single multi-line JSON object also works.
Will large files lag?
Nodes render on demand; a few MB is usually fine—trim very large files first.
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