JSON formatter
Pretty-print, minify, or sort keys, and show the parse error if the JSON is bad.

Details
Paste JSON to pretty-print it, minify it, or sort the keys. If the text is not valid JSON, the page shows the parse error. A successful parse does not mean the JSON matches a particular schema.

Category: Developer
Page: /tools/json-formatter
Text: /tools/json-formatter.txt

Limits
A green state means the current text parsed. It does not mean the JSON matches a schema.

Steps
1. Paste JSON.
2. Choose indent, minify, or sort.
3. Copy the result. Fix the error text if it is red.

Questions
Does sort change arrays?
Array order stays. Object keys are sorted at every level.

Are comments allowed?
No. JSON does not allow comments, and the error will say so.

Nothing is uploaded. Closing the tab drops the file.
Parsing is JSON.parse in the page.