Remove Duplicates from CSV File: Clean CSV Files Easily
User Query: I have a large CSV file with thousands of records, but many of them are duplicate entries. It makes my data messy and confusing. How can I remove duplicates from CSV file and keep unique records easily?
Summary: CSV files are one of the most commonly used formats for storing data. They are simple, lightweight, and supported by almost every application. However, when dealing with large CSV files, duplicate entries are very common. These duplicates can affect reports, analysis, and overall data quality. In this blog, we’ll show easy methods to delete duplicates from Lookup CSV file using manual and a professional DRS Softech CSV Duplicate Remover. Additionally, if you are a beginner or a professional, these methods will help you clean your CSV files accurately.
Quick Professional Solution: Remove Duplicates from CSV Files
Cleaning CSV files manually can be time-consuming for large CSV files. Using a professional CSV duplicate remover tool ensures fast, accurate, and safe removal of repeated entries. It works for small and large files, keeps original formatting, and prevents accidental data loss.
Steps to Remove Duplicates from Very Large CSV File Professionally
- Firstly, download the DRS Softech CSV Duplicate Remover Software.
- Now, pick: Add Files or Add Folder to add your CSV files. Click Next.
- Then, Preview and select the duplicate entries detected by the tool.
- Define the Path to Save and click Next to remove the duplicate CSV files.
Why Remove Duplicate Entries from CSV file?
- Duplicate-free CSV ensures reliable reporting and analysis.
- Removes unnecessary repetitions, reducing file size.
- Moreover, easier to search, sort, and process clean data.
- Avoid mistakes caused by duplicate entries in automated systems.
Which Method Is Best to Remove Duplicates from CSV File?
Here, we will show the difference between the two methods: manual vs professional tool. Choose the best method that fulfills all your needs. Let’s explore both methods in detail:
Manual Method |
Professional Tool |
It requires Excel or Google Sheets knowledge. This is slow for large files; it processes one file at a time. Also, there is a risk of accidental deletion and limited features. |
User-friendly interface, fast for large files, supports multiple CSV files at once, preserves formatting, and has advanced features like preview and selective removal, accurate and safe. |
Detailed Manual Steps to Remove Duplicate Rows in a CSV File
If you want to remove duplicate entries manually, you can do it using Microsoft Excel or Google Sheets. Follow these steps:
Step 01: Open the CSV File
- First, launch Excel or Google Sheets.
- Open your CSV file by selecting File → Open → Browse and choosing the CSV file.
Step 02: Select the Data Range
- Now, highlight all the data in your CSV sheet.
- Make sure to include all columns to avoid removing partial duplicates.
Step 03: Remove Duplicates in Excel
- After that, go to the Data tab.
- Then, click Remove Duplicates.
- In the pop-up, check the columns you want to consider for duplicates.
- Click OK. Excel will remove duplicate rows and show a summary of the removed entries.
Step 04: Remove Duplicates in Google Sheets
- Further, click Data → Data Cleanup → Remove Duplicates.
- Next, select the columns you want to check for duplicates.
- Click Remove duplicates. Google Sheets will clean the duplicate rows and give a summary.
Step 05: Save the Clean CSV File
- After removing duplicates, save the file as CSV to retain its original format.
- In the end, click File → Save As → CSV (Comma-delimited) (*.csv) in Excel, or File → Download → Comma-separated values (.csv) in Google Sheets.
Note: Manual methods are suitable for small files. For large CSV files, using a professional tool is faster, safer, and more accurate.
Professional Steps to Remove Duplicates from CSV File
Using a dedicated tool like DRS makes removing duplicates fast, accurate, and safe, especially for large CSV files. Also, with the help of this tool, you can export CSV data into PDF and other formats (File and Email Clients). Follow these steps:
- Download and install the DRS Softech CSV Duplicate Remover on your PC.
- Now, choose: Add Files or Add Folder to upload your CSV files. Click Next.
- Then, you can preview & select the duplicate files to remove. Click Next.
- Further, define the Output Format from the browse. Click Next.
- In the end, CSV files successfully remove duplicates, and you click Get Report.
Real-Life Scenario: Remove Duplicates from CSV File
Emily runs an e-commerce business and maintains her customer and order data in CSV files. Over time, she noticed many duplicate entries, which made her reports confusing and slowed down her analysis. Using the DRS Softech CSV Duplicate Remover Tool, she was able to quickly detect and remove all duplicates. Now, her CSV files are clean, accurate, and ready for reporting or importing into other systems.
One-Time Service for Removing Duplicates from CSV Files
If you only need to clean your CSV files once and don’t want to install the full software, DRS Softech offers a one-time service. Simply share your CSV files with our support team, and we will remove duplicates safely and accurately. This service is fast, secure, and cost-effective. All unique records are preserved, and your cleaned CSV files are delivered ready for reporting, analysis, or importing into other applications.
Key Features of DRS Softech CSV Duplicate Remover
- Quickly remove duplicates from a CSV files to keep all unique records intact.
- Clean duplicates from a single CSV file or multiple files at once to save time.
- Get a preview of your CSV data and duplicate entries before removing them.
- Apply filters to remove duplicates from specific columns or fields.
- Furthermore, efficiently handle both small and very large CSV files without any size limitations.
Conclusion
In this detailed blog post, we discussed two main methods to remove duplicates from CSV File. This process is essential to maintain clean, accurate, and reliable data. While manual methods work for small files, they are limited by several limitations. Besides that, using a professional tool makes the process faster, safer, and suitable for large files. It has advanced features, a preview option, and bulk processing support. You can make sure your CSV data stays organized and free from errors, ready for analysis, reporting, or import into other applications.
Frequently Asked Questions
Ans: You can remove duplicates manually using Excel or Google Sheets by selecting the data range and using the “Remove Duplicates” option. For large CSV files, a professional tool like DRS Softech CSV Duplicate Remover is faster and safer.
Ans: Yes, some free tools and Excel/Google Sheets offer basic duplicate removal. However, they may have limitations for large files. The DRS Softech tool offers a free trial for up to 25 records.
Ans: If done correctly, removing duplicates will not affect your original data. A professional tool provides a preview feature to ensure only duplicates are deleted, keeping your unique records intact.
Ans: Yes, a professional CSV duplicate remover tool allows you to clean multiple CSV files at once, saving time and ensuring consistent data across all files.