JSON Field Masker
Mask selected JSON fields recursively on your device. Replace values with a custom marker or remove them, then review and export the resulting JSON.
- Prepare your input
Choose the relevant options using the controls below.
- Run your task
Adjust the controls below and inspect the preview.
- Use the result
Check the result, then use the available copy or download controls.
Scope and limits
Mask or remove explicitly selected JSON property names at every nesting level. Names are case-sensitive. Processing stays in this page; input is not saved to history or sent by this tool. Other fields remain visible. This does not automatically identify sensitive data or guarantee anonymity.
Result
Fill in the fields and run the operation to see the result.
JSON Field Masker
Mask selected JSON fields recursively in your browser. Paste valid JSON, list field names one per line, then replace matching values with a custom marker or remove them from the output. The match is field-name based rather than schema-aware; review the result for nested data, arrays and identifiers before sharing it.
Features
- Accept valid JSON and process it locally in the browser.
- Match selected field names recursively through nested objects and arrays.
- Replace values with a custom marker or remove the fields.
- Copy or download the masked JSON result.
How to use
- Paste valid JSON and list the field names to handle, one per line.
- Choose replace or remove and set the replacement marker if needed.
- Run masking and inspect nested objects, arrays and remaining identifiers.
- Copy or download the reviewed JSON output.