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JSON Transform
Flatten nested JSON, remove null values, or wrap a payload as a single escaped string.
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When to use it
Flatten nested JSON into dotted keys
Strip null values for a cleaner payload
Escape JSON as a single string for a log line
How to use it
1Step 1Paste your text into JSON input to start
2Step 2Press the button and the result appears below
3Step 3Use the copy button to take the result anywhere
If the result looks off
The result looks cut off
Use the copy button to get the full result.
My input disappeared
It is saved on this device. Clearing browser storage removes it too.
Frequently asked questions
Can I undo a flatten?
Yes. The unflatten action restores dotted keys like a.b.c back into nested objects.
Can I undo a flatten?
Yes. Unflatten restores dotted keys like a.b.c back into nested objects.