JSON Viewer
Explore any JSON payload as a readable tree
Runs 100% in your browser — nothing is ever uploaded.
What is JSON Viewer?
Paste raw JSON and see its structure instantly as an ASCII tree: every key, type and array length is laid out with clear branch lines, so deeply nested API responses become readable in seconds. Great for debugging webhooks, inspecting config files or documenting payload shapes.
How to use JSON Viewer
- Paste your JSON into the input box or click “Load sample” to try it.
- Adjust the options in the toolbar if needed (root name, format, delimiter …).
- Click the convert button — the tree output appears instantly in the output pane.
- Copy the result with one click or download it as a file.
ConvertLab FAQ
Is the JSON viewer free?
Yes — 100% free, no signup, no limits, no watermarks. Use it as often as you like.
What information does the tree show for each node?
Each node shows the key name, its value type (object, array, string, number, boolean, null), array element counts and scalar values — so you understand the full shape of the payload without scrolling raw text.
Is my data uploaded to a server?
No. Everything runs entirely in your browser with JavaScript — your data never leaves your device, which makes the tool safe even for confidential files.
Are these converters free?
Yes — every ConvertLab tool is 100% free with no signup, no limits and no ad walls.
Is my data uploaded anywhere?
No. All conversions (JSON, CSV, XML, YAML, INI, .env) run entirely in your browser. Nothing ever leaves your device.
Do these tools work offline?
Yes — once the page is loaded, every converter works without an internet connection.