Keep your place
Line numbers make errors and review comments easier to locate in long JSON documents.
JSON Viewer
JSON Viewer for readable data.
See the shape of your JSON. Paste JSON, or bring across the result you converted. Read a clean document with line numbers and fold the parts you do not need.
Paste JSON, then format it into a readable view.
Built for reading real payloads.
The viewer keeps the text familiar while giving large responses enough structure to scan. New to nested data? Learn how to read nested JSON.
Fold nested data
Use the controls beside structural lines to collapse objects and arrays without changing the source.
Make room
Drag the lower handle to resize the workspace from a quick check to a full payload review.
Your JSON stays here.
Formatting, folding, and resizing happen in this browser tab. The document is not uploaded to a server, and a result passed from the converter is kept only for this browser session.
Read privacy detailsUseful when JSON stops being glanceable.
Open API responses, logs, configuration files, and copied payloads without losing the original structure.
- API responsesInspect nested objects before wiring them into code.
- Logs and debuggingFind the branch around an error without scanning a wall of text.
- ConfigurationReview arrays and repeated sections one block at a time.
- Converted dictionariesMove a clean result here directly from the Python converter.
Two versions? Send one result to Diff Checker and inspect every added, removed, or changed path.
Open Diff Checker