writing

Field notes from building
data import for the web.

Engineering, design, and security thinking from the team behind Rowslint — the embedded CSV & Excel importer for modern web apps.

01 Featured

EngineeringAPR 22 20268 min read

Why we parse CSVs in your users' browsers, not on our servers

Privacy-first by default isn't just a marketing line. Here's the actual architecture behind Rowslint, why we made the choices we did, and what it means for your security posture.

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02 All posts

TutorialAPR 21 20269 min read

How to import CSV files in React (the complete 2026 guide)

Add a production-grade CSV and Excel import widget to your React app in under five minutes. AI column mapping, in-browser validation, 2GB file streaming — without writing a parser.

TutorialAPR 19 202610 min read

How to import CSV files in Next.js (App Router & Pages Router)

Add a drop-in CSV and Excel importer to your Next.js app — App Router or Pages Router — with AI column mapping, in-browser validation, and a server-action handler that writes clean rows to your database.

TutorialAPR 17 20268 min read

How to import CSV files in Vue.js (Vue 3 Composition API)

Drop a production-ready CSV and Excel importer into your Vue 3 app in five minutes. AI column mapping, in-browser parsing, async validators, and full TypeScript support — without writing a single parser line.

TutorialAPR 15 20269 min read

How to import CSV files in Nuxt 3 (with server routes)

Add a complete CSV and Excel importer to your Nuxt 3 app — Universal SSR ready — with AI column mapping, in-browser parsing, and a Nitro server route handling validated rows.

TutorialAPR 13 20268 min read

How to import CSV files in Angular (with RxJS and DI)

Add a complete CSV and Excel importer to your Angular app — works with NgModule and standalone components. AI column mapping, async validators, and an RxJS-friendly service wrapper for `@rowslint/importer-js`.

TutorialAPR 11 20268 min read

How to import CSV files in SvelteKit (with Svelte 5 runes)

Add a complete CSV and Excel importer to your SvelteKit app with AI column mapping, in-browser parsing, and a typed form action handling validated rows. Works with Svelte 5 runes and Svelte 4.

TutorialAPR 9 20269 min read

How to import CSV files in Laravel (Blade + Inertia + Vite)

Add a complete CSV and Excel import widget to your Laravel app — Blade, Inertia, or Livewire — with AI column mapping, in-browser validation, and an Eloquent-friendly bulk insert handler.

TutorialAPR 7 202610 min read

How to import CSV files in Django (with DRF and async validators)

Add a complete CSV and Excel import widget to your Django app — templates, DRF, or HTMX — with AI column mapping, in-browser validation, and a bulk_create handler that scales to millions of rows.

TutorialAPR 5 20269 min read

How to import CSV files in Ruby on Rails (with Hotwire and Turbo)

Add a complete CSV and Excel import widget to your Ruby on Rails app — Hotwire, Turbo, or plain ERB — with AI column mapping, in-browser validation, and an `insert_all` handler that scales.

TutorialAPR 3 20269 min read

How to import CSV files with Node.js and Express (a 2026 guide)

Add a complete CSV and Excel import widget to your Node.js + Express app — in-browser parsing, AI column mapping, async validators, and a streaming bulk-insert endpoint that scales to millions of rows.