I will clean merge split and process large CSV excel json XML data
Freelancer
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
Highly Responsive
Known for exceptionally quick replies
About this Gig
Are you overwhelmed by messy, fragmented, or massive data files? If you are exhausted from manually combining, cleaning, and formatting your CSV and Excel exports, you are in the right place.
I specialize in handling complex, large-scale data manipulation, file merging, and data cleaning. Whether you have hundreds of small identical files or massive, completely different exports from CRMs (HubSpot, Salesforce) or E-commerce platforms (Shopify, Amazon), I will deliver a clean, structured master file.
What I can do for you:
Merge & Consolidate: Combine hundreds of CSV, XLSX, or TXT files into a single master sheet (even if columns don't perfectly align).
Data Cleaning & Deduplication: Remove duplicates, fix broken formatting, split combined columns (e.g., Names/Addresses), and handle missing values.
Big Data Handling: Split massive CSV files into smaller, organized sheets based on your custom rules.
Supported Formats: CSV, Excel (XLS, XLSX), TXT, JSON, XML.
No dataset is too large or too messy.
Drop me a message with your file samples before ordering, and let's get your data perfectly organized!
Convert from:
CSV
Convert to:
CSV
FAQ
Can you merge non-identical CSV files?
Yes. I can merge files even if the column names and structures are different by using common keys like Email, Order ID, Customer ID, etc.
Can you process very large CSV files?
Yes. I can process very large datasets with hundreds of thousands or even millions of rows using Python automation.
Can you split large CSV files into smaller files?
Yes. I can split files by: Country State Category Row count Custom conditions
What file formats do you support?
Supported formats: CSV XLS / XLSX TXT JSON XML
Can you clean messy or broken CSV files?
Yes. I can: Remove duplicates Fix formatting issues Standardize dates and phone numbers Handle missing values Repair broken CSV structures
How can I send very large files?
You can send: ZIP files Google Drive links
Are my files secure?
Yes. Your files are kept confidential and are never shared.
26 reviews for this Gig
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T tailspin4hire

United States
Fantastic work as always.
Up to $50
Price
1 day
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Helpful?T tailspin4hire

United States
Exceptional work as always
Up to $50
Price
2 days
Duration
Helpful?T tailspin4hire

United States
amazing work as always.
Up to $50
Price
3 days
Duration
R 
Seller's Response
Helpful?D davwoc

United States
GREAT SERVICE!
Up to $50
Price
1 day
Duration
R 
Seller's Response
Helpful?T tailspin4hire

United States
Amazing work as always
Up to $50
Price
1 day
Duration
R 
Seller's Response
Helpful?
26 reviews for this Gig
| (25) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
T tailspin4hire

United States
Fantastic work as always.
Up to $50
Price
1 day
Duration
R 
Seller's Response
Helpful?T tailspin4hire

United States
Exceptional work as always
Up to $50
Price
2 days
Duration
Helpful?T tailspin4hire

United States
amazing work as always.
Up to $50
Price
3 days
Duration
R 
Seller's Response
Helpful?D davwoc

United States
GREAT SERVICE!
Up to $50
Price
1 day
Duration
R 
Seller's Response
Helpful?T tailspin4hire

United States
Amazing work as always
Up to $50
Price
1 day
Duration
R 
Seller's Response
Helpful?

