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Simple web utilities to transform data and speed up repetitive work.

P.IVA 02983090420

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© 2026 Seeft di Bufarini Simone All rights reserved.

PEC: simone.bufarini@pec.it · Cod. Dest.: J6URRTW

Online tools Transform and prepare data

CSV Column Mapper

Choose columns, rename them and create a new CSV or JSON file.

Local mapping: no data is uploaded

Paste source CSV

Want to add fixes, filters or conversions?Open Data Transformer

Map CSV columns without code. Exclude fields, choose unique output names, review the preview and download CSV or JSON.

SEEFT WORKFLOW

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CSV Cleaner

Remove spaces, empty rows and exact duplicates in one click.

JSON ↔ CSV

Convert JSON to CSV and CSV to JSON in one tool.

Data Transformer

Explore, refine, filter and map CSV and JSON without uploading data to a server.