I will clean, convert, merge or fix CSV excel json files with python
Python Automation, API and Data Integration Developer
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
Need to clean, convert, merge, split, reformat or fix CSV, Excel or JSON data?
I process structured files with Python and deliver clean, ready-to-use output.
Typical tasks include:
- removing duplicates or invalid rows
- filtering and sorting data
- changing date or number formats
- splitting, combining, renaming or reordering columns
- mapping or replacing values
- merging or splitting files
- CSV Excel conversion
- JSON CSV / Excel
- flattening nested JSON
- reorganizing data
- basic validation and consistency checks
Basic: one clearly defined task on one file or a small batch of files with the same structure.
Standard: a larger batch of files with the same structure, or several related transformations on the same dataset.
Premium: a reusable Python script for one defined workflow.
All fixed packages assume the same input structure/schema. Different structures, unrelated workflows, complex business logic, APIs, databases, scraping or OCR require a custom offer.
I have 15 years of professional software development experience and hundreds of completed Fiverr orders.
For large files or unusual requirements, please send a sample before ordering.
Convert from:
Other
Convert to:
CSV
My Portfolio
FAQ
What is included in the Basic package?
Basic covers one clearly defined processing task for one file or a small batch of files with the same structure. I process the files using Python and deliver the finished output files. Source code is not included.
Can I send several files in the Basic package?
Yes, if they all have the same structure and require the same processing. For example, several CSV files with identical columns that need the same cleanup can usually be handled together.
What is the difference between Basic and Standard?
Basic is for a small file or batch and one clearly defined task. Standard is for a larger batch of similarly structured files or several related transformations applied to the same dataset.
Do all files need to have the same structure?
For the fixed-price packages, yes. They should follow the same schema, column layout or data structure. If your files have different structures, please contact me for a custom offer.
Which file formats do you support?
The main formats are CSV, Excel/XLSX and JSON. I can also work with TXT, TSV and some other structured formats. Please contact me first if your format is unusual.
What types of transformations can you perform?
I can clean data, remove duplicates, filter rows, change formats, map values, reorganize columns, merge or split files, convert between formats, flatten JSON and perform similar structured-data transformations.
Will I receive the Python script?
Basic and Standard include the processed output files only. Premium includes a reusable Python script and source code for one defined workflow.
Can you automate the same task for future files?
Yes. That is what the Premium package is for. I can create a reusable Python script that processes future files with the same structure.
Can you work with large files?
Yes, but please send the approximate file size, number of rows and a small sample before ordering. Very large datasets may require a custom offer.
What counts as files with the same structure?
Files have the same structure when the same fields or columns are arranged consistently. For example, CSV files with the same column names or JSON files following the same schema.
2 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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C christianloh386

Germany
Ongoing collaborationThanks a lot for the help and top converter!
$200-$400
Price
6 days
Duration
Helpful?A alrubai89

United Kingdom
I sent a large file with complex requirements to several people, which I barely managed to articulate due to my limited knowledge of Python and coding in general. Only Serhii was able to understand my request. I was initially skeptical, but when the results came back, I realized his exceptional talent....
$200-$400
Price
5 days
Duration
S 
Seller's Response
Helpful?
2 reviews for this Gig
| (2) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
C christianloh386

Germany
Ongoing collaborationThanks a lot for the help and top converter!
$200-$400
Price
6 days
Duration
Helpful?A alrubai89

United Kingdom
I sent a large file with complex requirements to several people, which I barely managed to articulate due to my limited knowledge of Python and coding in general. Only Serhii was able to understand my request. I was initially skeptical, but when the results came back, I realized his exceptional talent....
$200-$400
Price
5 days
Duration
S 
Seller's Response
Helpful?
