You've created your target format. Now it's time to load a file and see WeTransform do its thing. The whole process — from upload to clean output — takes just a few minutes.

Click "New transformation" from your dashboard, then select the target format you want to transform your file into. This is the format you configured in the previous step.

Then upload your source file. WeTransform accepts CSV, Excel, XML, JSON, PDF, TXT, and images.

Once your file is uploaded, WeTransform's AI automatically maps your source columns to your target format columns. This is the Match step.

In most cases, the AI gets it right. But you can review and adjust any match manually before moving on — pick a column for a different target, unlink a wrong match, or add a missing one.

Before or after reviewing your matches, you can add transformation rules — instructions that tell WeTransform how to clean, convert, or enrich your data.

Rules can be added at any point in the workflow. You can skip this step on your first run and come back to it later.

This is where you see the result of your transformation. WeTransform displays your data in a table — valid rows in white, rows with errors highlighted in red.

At the top of the screen, you'll see the total number of errors. Any column containing errors will have a red header with a "Fix error" button.

Click "Fix error" to see the suggested solutions for that column — WeTransform proposes options based on the type of constraint that was violated. Choose a solution and it applies to all affected rows at once.

Once you're happy with the result, click "Submit". WeTransform confirms that your file has been processed and lets you download the transformed file to your desktop.