Workspace / File converter
LESS REWORK. MORE POSSIBILITIES.

Your data, your format.

Convert CSV and Excel files into validated imports—with reusable templates.

1 Choose a template
2 Upload & map
3 Validate & export

Start with the output you need

Create a format, use your own template, or customize a starter.

01 / TEMPLATE

Add your input file

Map its columns to the output format below.

02 / INPUT
↥

Drop a CSV or Excel file here

or browse files to get started

CSV / TSV up to 10 MB · XLSX up to 5 MB · 50,000 rows · 500,000 cells
◇ Your file stays on your device. It isn’t uploaded or shared.Text identifiers and leading zeros are preserved

Build your output columns

One row per output column. Choose a header or type your own.

Choose the value source in each row. Open Options only when you need extra rules or validation.

Guest templates are saved locally in this browser’s data. Clearing browser data can remove them. Download a backup to keep a separate copy.

Validation checks your template rules, not compatibility with an external system.

✧
One format. As many workflows as you need.

Create your columns once. Reuse the mappings every time.

▥
YOUR TIDYCOLUMNS ACCOUNT

Log in

Welcome back. Log in to your account.

Accounts belong to this installation or hosted website. Templates remain on this device; files are processed in your browser.