Private browser-based CSV repair

Fix malformed CSV files before they break your import.

CSVDoctor validates and repairs broken CSV files entirely in the browser. Upload a file, preview the first 50 rows, inspect line-level issues, choose the right delimiter, and download a corrected CSV without sending your data anywhere.

Up to 5MB No backend No file uploads Free tool

Step 1

Upload and configure

Files stay on device

Drop a CSV file here

or click to browse. CSVDoctor supports files up to 5MB and never uploads them.

Delimiter Override this if the detected delimiter looks wrong.

Expected columns 0 Calculated from the most common row width.

File: No file selected
Delimiter in use: Auto-detect
Preview: First 50 rows after parsing

Step 2

Validation report

Waiting for file

Rows kept 0

Expected columns 0

Issues found 0

Issue rows 0

Auto-fixes 0

Empty rows 0

Detected issues

Line numbers refer to the original uploaded file.

Upload a CSV file to see a row-by-row validation report.

Step 3

CSV preview table

First 50 rows after parsing

Clean row Row with validation issue Removed empty row

Line	Status
Upload a CSV file to preview parsed rows and highlight line-level errors.

Output

Corrected CSV sample

Upload a file to see the repaired CSV output.