Checkdigit

Local file inspector

Files

Inspect one file in this browser tab. The file is read here, the format is detected from its content, every proposed correction is shown with its evidence, and the corrected file is built from the edits you approve. Nothing is uploaded. Files up to 5 MiB are inspected whole in memory, with near-miss suggestions; larger files, up to 5 GiB, are streamed from disk, their proposals are kept in this site's private browser storage instead of memory, and the corrected file is written back as a stream. That storage is cleared when you discard the job or next open this page.

1 Choose the input

Drop a file here or .

Accepted: plain text, CSV/TSV, fixed-width, EDIFACT, X12 and container XML. Up to 5 MiB is inspected in memory; larger files, up to 5 GiB, are streamed from disk. Excel workbooks are not read yet.

Or paste text

2 Options

Advanced settings

These describe how a file would be imported into a fleet. The local inspector only compares and proposes; it never changes a stored fleet, so they affect wording and reporting, not what is applied here.

Checked in this browser; nothing is uploaded.