JSON prefix keys
ClientNamespace keys when merging configs or generating test doubles with a common prefix.
Learn more: key prefixes
Applies to every object in the tree; values and array order stay unchanged.
Local processing
Parsing and output formatting run entirely in your browser—nothing is uploaded for this transform.
Input
?
Nearby workflows on Toolcore
- JSON suffix keys — Append a suffix to each object key throughout nested JSON—in the browser only. once JSON text parses on this page.
- JSON rename keys — Map old property names to new—deep rename at every object level; local only. once JSON text parses on this page.
- JSON camelCase keys — Convert every object key to camelCase recursively—in your browser, no upload. once JSON text parses on this page.
- JSON formatter — JSON format online: pretty-print, minify, validate, escape, download . once JSON text parses on this page.
Common use cases
- Namespace keys when merging configs or generating test doubles with a common prefix.
Common mistakes to avoid
Invalid JSON
Fix parse errors before expecting output.
FAQ
Is data uploaded?
No—all parsing and transforms run locally.
How is this different from jq?
This page focuses on one deterministic task without a filter language.
More tools
Related utilities you can open in another tab—mostly client-side.
JSON suffix keys
ClientAppend a suffix to each object key throughout nested JSON—in the browser only.
JSON rename keys
ClientMap old property names to new—deep rename at every object level; local only.
JSON camelCase keys
ClientConvert every object key to camelCase recursively—in your browser, no upload.
JSON formatter
ClientJSON format online: pretty-print, minify, validate, escape, download .json.