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Data Sparrow
Local-first • uploads need consent

Data Sparrow

How results are produced

Your original file stays unchanged. Data Sparrow applies each change in order so you can review, undo, and repeat your work.

Reading files

The app checks how rows, columns, headings, quotes, and text are arranged. If a file could be read in more than one way, you can review and change the file settings. Values remain text until you choose to convert them.

Making changes

Each change is added to a list and applied in order. The app shows how many rows were affected and warns about possible problems. Undo and redo change this list, never your original file.

Where the work happens

Most work happens on this device. Some file types or very large tasks need temporary online processing. The app always asks before uploading and explains when the online copies are deleted.

Downloads

Before downloading, you can choose the file type, headings, text encoding, and other file settings. The app warns when a download cannot preserve every detail or contains only part of the data.