CSV Doctor

Diagnose problematic CSV, TSV and delimited text files, review repairs and export a separate copy.

v1.0.0 · Windows 10 / 11 · x64 · MIT · Offline

Download for Windows Source code ↗

First run / Verify download →

Requires Microsoft Edge WebView2 Runtime.

CSV Doctor running on Windows with demonstration data — View screenshot ↗

First run / Verify your download

Extract the whole ZIP into a folder and run CSVDoctor.exe. Keep adjacent packaged files and folders together.

Microsoft Edge WebView2 Runtime is required separately. Install it from Microsoft if missing; it is not bundled or installed automatically by the app.

Windows binaries are not Authenticode signed, so Windows may show a reputation or security warning. Download only through official ALMARFELD or GitHub release links. Do not disable Windows security.

For an optional SHA-256 check, open PowerShell in the folder containing your downloaded ZIP and run:

Get-FileHash -Algorithm SHA256 .\CSVDoctor-v1.0.0-win-x64.zipExpected SHA-256:bba87c59320c96d0015afdf20435a09229baf9f03a9be5319f7b7152eb45bf29

Compare the Hash value; letter case does not matter. A matching hash confirms the downloaded bytes match the published artifact; it is not a malware scan or an Authenticode signature. Do not run a file with a different hash.

Supported formats

CSV · TSV · Delimited TXT · Comma / semicolon / tab / pipe

Features

Detect and diagnose

Detect delimiters and UTF-8, UTF-8 BOM, UTF-16 or Windows-1252 encoding where supported. Review detection choices; ambiguous parsing requires an explicit decision.

Structural diagnostics

Find inconsistent column counts, malformed or ambiguous quoting, blank rows, empty headers and duplicate headers. See the source in a table preview.

Excel-related risk warnings

Identify potential formula-risk cells and leading-zero or long numeric identifiers. Identifiers remain text; optional formula-risk prefixing changes cell text only when explicitly selected.

Review before exporting

Compare source and proposed output, with changed cells highlighted and each selected fix explained. Rows and columns are never silently removed.

Export a repaired copy

Choose UTF-8 or UTF-8 BOM, comma, semicolon, tab or pipe, and CRLF or LF record endings. Save a separate file and a small JSON report of findings and applied changes.

How to use it

Open or drop a CSV, TSV or TXT file
Diagnose and confirm source interpretation
Choose repairs and review before / after
Export a new copy and reopen it for review

Privacy and limitations

Files are processed entirely offline. No telemetry, uploads, accounts or automatic downloads. Export creates a new copy and an adjacent JSON repair report; originals are not modified and existing destination files are refused.

Input limits: 16 MiB, 100,000 records and 256 columns. Failed or ambiguous parsing blocks export until resolved explicitly. CSV files cannot prevent Excel itself from reinterpreting values after import; import identifier columns as Text. Formula-risk protection is optional and not universal. Microsoft Edge WebView2 Runtime is required separately, not bundled or installed automatically.

Support and bug reports →