Open and clean huge files.
CSV & Excel processing
In simple words: When a file is too big to open or full of duplicates, we split, clean and merge it, and load it where you can use it.
Split, merge, clean and convert large CSV and Excel files, and load them into SQL or MongoDB, even when they are too big to open.
For example: A team had a single huge export no tool could open. The team queries the data in seconds. See how we did it ↓
The problem
Why teams come to us
Your files are too large for Excel, full of duplicates, or split across hundreds of exports.
What you get
- Split huge CSVs into smaller files by rows or size
- Merge many CSV or Excel files into one
- Cleaning, deduplication and formatting
- Conversion to Excel, JSON, SQL or MongoDB
- Reusable Python script
- Confidential handling
Benefits
What changes for your team
Work with files of any size
Clean, consistent data
Faster uploads and imports
Repeatable
How it works
From first call to working result
- 1
Discovery call
A free 30-minute call to map your goal, sources, volume and where the result should land. NDA on request.
- 2
Sample first
We build a small working sample so you can check fields, format and quality before the full build.
- 3
Build & test
We build the full solution, test it on real data and edge cases, and share progress as we go.
- 4
Deliver & support
You get the result, the source code and short handover notes, plus fixes during the support window.
Example project
A 20 GB export made usable
- The challenge
- A team had a single huge export no tool could open.
- What we built
- We split it into manageable files, removed duplicates and loaded the clean data into PostgreSQL.
- The outcome
- The team queries the data in seconds.
An illustrative example of a typical CSV & Excel processing engagement.
Use cases
Where this helps
Tech stack
Tools we use
FAQ
Questions about CSV & Excel processing
How large a file can you handle?
Very large files, tens of gigabytes, using streaming processing.
Can you load it into a database?
Yes, SQL databases or MongoDB.
Will you keep my data?
No, it is deleted after delivery unless you ask otherwise.
Related services
Often combined with
Ready to talk about CSV & Excel processing?
Send a short brief or book a call. A senior engineer replies within a few hours.