I built an open-source CSV importer that I wish existed
At my previous startup, CSV import was make-or-break for customer onboarding. We built the first version in three days. Then reality hit: Windows-1252 encoding, European date formats, embedded newlines, phone numbers in five different formats. We rebuilt that importer multiples over the next six months. Our onboarding completion rate dropped 40% at the import step because users couldn't fix errors without starting over. The real problem isn't parsing (PapaParse is excellent). It's everything after: mapping "Customer Email" to your "email" field, validating business rules, and letting users…
I built an open-source CSV importer that I wish existed launched on August 27, 2025 with 5 votes and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Open-source CSV Importer for React. Contribute to importcsv/importcsv development by creating an account on GitHub.
In the maker’s words, at launch
At my previous startup, CSV import was make-or-break for customer onboarding. We built the first version in three days. Then reality hit: Windows-1252 encoding, European date formats, embedded newlines, phone numbers in five different formats. We rebuilt that importer multiples over the next six months. Our…
Does a similar job
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Csvbox.io – CSV import button for a web app, SaaS or API2021 · csvbox.io · ▲155Drop a production-ready CSV, Excel, and PDF importer into your SaaS in minutes. Handle up to 2 million rows per import, with column mapping, validation, webhooks, and clean data delivered to your API.
HelloCSV - A free FlatFile alternative2025 · hellocsv.github.io · ▲123A modern, frontend only, open source, CSV importer
- AOAn open source, modern CSV importer tool in React2021 · czhu12.github.io · ▲15
Machine Learning @ Airbnb
We built a developer-first open-source CSV import platform2023 · github.com · ▲25

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Source: Show HN post ↗ · launch text quoted in part
Launched alongside, August 2025
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