JSON prefix strings

Client

Namespace string codes or IDs in nested JSON.

Learn more: string prefixes

Empty prefix is allowed but leaves strings unchanged.

Local processing

Parsing and output formatting run entirely in your browser—nothing is uploaded for this transform.

Input

?
Paste JSON, then read transformed output below.

Nearby workflows on Toolcore

  • JSON suffix strings — Append text to every string leaf recursively—in your browser. once JSON text parses on this page.
  • JSON prefix keys — Prepend the same string to all object keys recursively—client-side rename helper. 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.
  • JSON compare — Side-by-side diff paths; sample pre-filled. once JSON text parses on this page.

Common use cases

  • Namespace string codes or IDs in nested JSON.

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.