Text Tools

Replace Template Variables from JSON

Render templates with {{name}}, [name], or $name placeholders using a JSON object of values. See unresolved placeholders and copy the rendered result.

TextTemplateVariables

Favorite this tool

No favorite storage mode has been selected.

Quick actions

Copy this tool URL or open the system share sheet on a supported device.

Use cases

  • Preview personalized message drafts
  • Fill config templates from JSON
  • Find missing placeholders before send

How to use

  1. Enter a template with placeholders
  2. Provide a JSON object of variables
  3. Render, then copy the result

Example input and output

Template / JSON

Hello {{name}} / {"name":"Ada"}

Output

Hello Ada

FAQ

Which placeholder styles work?

Common forms such as {{name}}, [name], and $name are supported.

What if JSON is invalid?

Rendering stops with an error until the data source is a valid object.

Tools

Related tools

Continue with another translated tool for a nearby task.

Batch Placeholder Replacer

Batch Template Fill for SQL and Code

Available

Fill a single template with %1, %2, or %s placeholders from each CSV-style data row to batch-generate SQL statements or scaffold code locally in your browser.

Text Dev Batch

Regex Replacer

Regex Find and Replace Online

Available

Run regular-expression find and replace with custom flags and capture-group backreferences such as $1. Batch text cleanup stays in your browser.

Regex Replace Text