How to Remove Duplicates in CSV Files ?

Would you like to remove duplicates in CSV files? Do you require a suitable and completely secure method to do so? If so, we must let you know that you’ve found the appropriate blog page. You may find simple step-by-step instructions for simultaneously eliminating duplicate columns and rows from several CSV files here. Continue browsing this useful blog page, then.

There are three methods for removing duplicates from CSV files. You can go through them all one by one to pick the one that is right for you.

Technique #1: Scrub Duplicate Rows With Notepad++.

  1. Using a text editor such as Notepad++ to eliminate duplicated rows is one option.
  2. Open your CSV file in Notepad++ and select the Search option.
  3. Then, select “Find in Files.” Enter “(.?)$r (?=.1$)” in the “Find what” column.
  4. This will locate all similar rows in your CSV file.
  5. Then, select the “Replace” tab. Enter “1” in the “Find what” field.
  6. Leave the “Replace with” field blank before clicking the “Replace All” button.

This will eliminate all duplicated rows from your CSV file.

Technique #2: Wipe Duplicate Rows With Microsoft Excel.

Another option is to use a spreadsheet tool such as Microsoft Excel or Google Sheets to delete redundant entries.

  1. Open your CSV file in Excel or Sheets and remove all columns except the one with the data you wish to retain.
  2. Next, sort the data in ascending order. In Excel, go to the Data tab and select the “Sort” option.
  3. Go to the Data menu in Google Sheets and select “Sort range.”
  4. Finally, delete all of the duplicate rows.
  5. This can be done by hand or with a formula which might look like =COUNTIF(A:A,A1)>1 (Excel) or =COUNTIF(A:A,A2:A)>1 (Excel). (Google Sheets).

This will remove all rows that have duplicate values in column A.

So, the given are the manual methods for removing duplicates from CSV files. However, you should be aware of certain of the manual ways’ limitations.

The Manual Approach’s Drawbacks

  1. The manual method necessitates the use of numerous formulas and strategies.
  2. To manually eliminate duplicates in CSV files, you must have technical skills.
  3. The manual technique cannot be used to eliminate duplicate columns.
  4. Duplicates in several CSV files cannot be removed at the same time.

To bypass all of these constraints, we have provided another option for you. Please give a look at it as well.

Technique #3: Batch Remove Duplicate Rows and Column from CSV Files

PCDOTS CSV Duplicate Remover is one of the best and most user-friendly programs for removing duplicates from CSV files. This application is intended to remove duplicates from numerous CSV files or folders at the same time.

It is a time-saving application that requires only a few basic actions to remove CSV duplicates. You can read through all of the stages below to learn how to use the software to complete the task.

Step-by-Step Process to Remove Duplicates in CSV Files in Bulk

  1. First, on your Windows device, download, install, and execute the CSV duplication remover tool.
  2. Following that, you must navigate to and import the CSV files or folders into the application.
  3. You can preview the CSV files after they have been put into the tool.
  4. Select the Remove Duplication option after clicking the Action button.
  5. Choose a location to save the resulting files and then click the Save button.

This makes it appear to be very simple to automatically remove duplicates in CSV files. Now, have a look at its characteristics below if you want to learn more about this automated CSV duplicate remover.

Discover Some Traits of the CSV Duplicates Erasure

  1. This application is built with a straightforward graphical user interface for ease of use.
  2. It lets you select CSV files or CSV folders to eliminate duplicates from.
  3. The tool also allows you to evaluate CSV files before deleting duplicates from them.
  4. It contains a search bar that allows you to look for specific items in your CSV files.
  5. It is totally self-contained and does not require you to download extra settings between tasks.
  6. This CSV duplication removal software is suitable with all Windows-powered devices.


We have provided you with the top three methods to remove duplicates in CSV files. You can evaluate all of the approaches listed above and use the one that works best for you.

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