JSON Viewer
Free online JSON viewer. Paste or upload your JSON and instantly visualize it as a collapsible tree with color-coded fields. No registration required.
About this tool
This online JSON viewer displays your data in an interactive tree format, where each node is indented to reflect the data hierarchy. You can expand or collapse any group to focus on the information that matters. Fields and values are color-coded for quick identification, and any change made to the input is instantly reflected in the visualization. Ideal for developers debugging APIs, validating responses, or inspecting configuration files — no installation or sign-up needed.
Features
Use Cases
- API DebuggingUnderstand extensive payload structures by isolating nodes and checking parent-child relationships.
- Configuration CheckingFind missing commas, wrong brackets, or badly structured settings files effortlessly.
- Data PresentationShare screen easily during technical meetings with a sanitized and collapsible JSON graphic.
How to Use
Paste Your JSON
Simply paste or drag your raw JSON file into the editor.
Instant Verification
The tool quickly validates your code, indicating errors dynamically.
Tree Visualization
It generates a fully browsable, color-coded interactive tree for easy data reading.
Questions & Answers
Just drag your .json file directly into the editor area or paste its content. The tool loads and displays the structure instantly, with no need to install any software.
No. The processing happens strictly inside your browser window. We do not transmit or store your JSON objects on our servers, ensuring total privacy.
Yes. By interacting directly with the generated JSON tree, you can copy specific nodes, arrays, or sub-objects without parsing the entire raw text.
Yes. If your JSON payload is malformed (missing quotes, trailing commas, etc.), the tool will display a direct red syntax error flag preventing the tree render.
Use the search field above the viewer or JSON tree: type the term you're looking for and the tool highlights every occurrence, in both keys and values, shows how many results were found, and lets you navigate between them with the previous/next buttons, without having to manually expand each node.