Smart Mapper Core
Map tabular data into a custom flat JSON structure.
Your data stays in your browser
Source table
Waiting for data
Target fields
Paste a table to configure target fields.
Mapped JSON
No resultAdd at least one valid target field to preview JSON.
Example
name from the template {first} {last} · source from the constant import
Input
first,last Ada,Lovelace
Output
[
{
"name": "Ada Lovelace",
"source": "import"
}
]How it works
- Each target field takes a source column, a constant (text, number, boolean, or null), a template such as
{first} {last}, the current timestamp, or a generated value. - The output is flat JSON objects, one per row, with fields in your order.
- A template that names an unknown column is reported on its field.
- Generated values stay the same while you edit, until you choose Regenerate values.