JSON data entered as text or selected from a file
All toolsAccepted input Created output Tips and limitations
Developer · ready
JSON Flattener
Flatten nested JSON into portable dot paths or rebuild the original structure.
Loading local tool…
No uploadsYour files stay on this device.
Local engineYour browser does the work.
Auto cleanupTemporary memory is released.
About this tool
Use json flattener without uploading files
Flatten nested JSON into portable dot paths or rebuild the original structure. JSON Flattener runs in the current browser session, giving you a direct result without sending the source to a Filemazing processing server.
Processing takes place in your browser tab. Temporary working data is released when you leave or reload the page.
Three steps
- Choose or paste the structured input for JSON Flattener.
- Select the columns, keys, order, or transformation rules to apply.
- Review a sample of the transformed result before downloading it.
Useful for
Common flatten json tasks
- Using flatten json without an upload queue
- Reviewing configuration and source text
- Creating development-ready output
Practical details
What to know before you start
A transformed data file from JSON Flattener
- Generated or reformatted output still needs review in its target application.
- Do not treat syntax validation as proof that a configuration is secure or semantically correct.
- Review the JSON Flattener result before using it in an important workflow.