Does this use AI like the PDF and image tools?

No, XLSX, XLS, CSV, and JSON are already-structured formats, so Datafromfile parses them deterministically. That means faster, more predictable results than sending them through an AI model.

Can I convert JSON to Excel and back?

Yes, upload either format and export to the other. Each top-level field becomes one column; a nested object within a field is kept as-is rather than auto-split into separate columns, so deeply nested JSON is easiest to work with if you flatten it before uploading.

What counts as "messy" here?

Inconsistent header rows, merged cells carried over from a printed report, or mismatched column counts between rows: the kind of spreadsheet that breaks a simple CSV import.

Clean and Restructure Excel, CSV & JSON Data

Already have your data in a spreadsheet or JSON file, just in the wrong shape? Upload it directly: Datafromfile parses XLSX, XLS, CSV, and JSON deterministically (no AI model needed for these formats), lets you fix headers, merged cells, and inconsistent rows in the editor, then export to whichever format you actually need.

Drop your file here

or browse your computer

XLSX · XLS · CSV · JSON · up to 3 MB

Features

Reads XLSX, XLS, CSV, and JSON directly, parsed deterministically, not guessed by an AI model
Fixes merged header cells and inconsistent column counts in the interactive editor
Converts between formats: Excel ↔ CSV ↔ JSON, in either direction
Same review-and-export workflow as every other Datafromfile extraction

How it works

Upload your file: An XLSX, XLS, CSV, or JSON file up to 3MB.
Automatic structure parsing: Headers, rows, and nested JSON fields are mapped into a table.
Edit & export: Fix any cell, then export to XLSX, CSV, or JSON.

Frequently asked questions

Does this use AI like the PDF and image tools? No, XLSX, XLS, CSV, and JSON are already-structured formats, so Datafromfile parses them deterministically. That means faster, more predictable results than sending them through an AI model.
Can I convert JSON to Excel and back? Yes, upload either format and export to the other. Each top-level field becomes one column; a nested object within a field is kept as-is rather than auto-split into separate columns, so deeply nested JSON is easiest to work with if you flatten it before uploading.
What counts as "messy" here? Inconsistent header rows, merged cells carried over from a printed report, or mismatched column counts between rows: the kind of spreadsheet that breaks a simple CSV import.