Toolbox for developers / Online CSV diff

CSV compare

This tool allows to compare CSV files and visualize the differences. It compares line by line, and indicates which fields are different.

You can see the user guide to help you to use this csv compare tool.

First CSV to compare



Second CSV to compare






CSV comparison



User guide

This tool allows to compare two CSV files, and visualize the diff.

Copy and paste, drag and drop your CSV files or directly type in the editors above, and they will be automatically compared!
You can also click on "load CSV from URL" button to load your file from a URL (Must be https).
You can also click on "Browse CSV file" button to load your CSV from a local file.

This tool highlights in red color the data which are different.


Why compare CSV files ?

Comma-separated values (CSV) is a delimited text file that uses a comma to separate values. Each line of the file is a record which contains fields, separated by commas. Sometimes the separator can be another character (semicolon, tab ...).

Many applications use the CSV format to transfer data. This format is convenient for exporting and / or importing data. For example, databases can often export in this format. It is often preferred for large amounts of data.

Sometimes it is necessary to compare CSV files. For example to detect the differences between two exported files.

It can be complicated when the CSV file are large, this tool allows you to compare CSV easily.


Online CSV compare tool

CSV diff tool allow to compare two CSV files online. The comparison is done directly in your browser, Your CSV files are not sent to the server side!

CSV diff tool makes a line by line comparison, then it compares each field according to their position in the line. Your csv files must be sorted so you can compare them.

It is a new tool, you can give us your feedback, and make comments.


Load CSV From URL
You can report a bug or give feedback by adding a comment (below) or by clicking "Contact me" link (at the top right hand corner of the page).

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without warranty of any kind, either express or implied and are to be used at your own risk.