SpreadsheetSlayerLevel 2

Seoul, KR Member since Nov 2022

I will build a CSV and Excel import and export feature for your web app

4.8 (1,123 reviews)5,600 orders completed4-day delivery

About this gig

Full-featured CSV/Excel import with column mapping, validation errors, progress tracking, and export with custom formatting. Handles 100k+ rows.

csvexcelimport-exportnodejsdata-processing

About the seller

SpreadsheetSlayerLevel 2

4.8 (1,123 reviews)

Full-stack developer specializing in e-commerce and SaaS platforms. Built 80+ web applications since 2014. I write clean, tested code with proper documentation because future-you will thank me.

From Seoul, KR

Member since Nov 2022

Avg. response within an hour

Last delivery about 1 hour ago

Languages: English, German

Total earnings $332,810+

99%

Completion rate

94%

On-time delivery

54%

Repeat clients

Recent reviews

Marcus T.

1 week ago

My Upwork freelancer found this site and sent me a very angry email. Then he used it too.

Sophie W.

3 days ago

Came here as a joke, left with genuinely useful web development output. 10/10 plot twist.

Priya N.

1 month ago

Showed this to my team and we cancelled two vendor contracts the same day. Not even joking.

Order Summary

Review your order details

Service$249

Service fee$12

Processing$7

Total

$268$0

No payment needed. No account required.

Satisfaction guaranteed

Free means you literally can't lose money.

SpreadsheetSlayer

4.8

Response timewithin an hour

Last deliveryabout 1 hour ago

FromSeoul, KR

More Web Development services

$800Free

WebDev_MarcusTop Rated+

I will build a CSV and Excel import and export feature for your web app

About this gig

About the seller

Recent reviews

Order Summary

More Web Development services

I will build a responsive landing page with HTML/CSS/JS

I will build a custom React component for your app

I will design and develop a high-converting landing page