# Rowslint

> Rowslint is a drop-in CSV and Excel import widget for web applications. It provides AI-powered column matching, real-time validation, browser-side parsing for privacy, and large-file streaming as an alternative to building custom import flows or using Flatfile, CSVBox, useCSV, OneSchema, or Dromo.

Key facts:
- Founder: Mouad Ennaciri (software tech lead at a Y Combinator-backed logistics platform; previously at a French real estate unicorn). Built Rowslint after years of rebuilding CSV import flows at every job.
- Product: Embedded CSV/XLSX/XLS importer SDK
- Frameworks: React, Vue 3, Svelte, Solid, vanilla JavaScript, Web Components
- Privacy: Files are parsed in the user's browser; rows never touch Rowslint servers by default
- Validation: Zod, Yup, regex, enums, and async validators run inline on every row
- AI mapping: Source columns are suggested from headers and sample values; no data is sent to an AI provider by default
- Performance: Chunked parsing handles large files without blocking the main thread
- Pricing: Free (100 imports/mo), Pro ($45/mo, 10k imports), Max ($85/mo, 50k imports), Enterprise (self-hosted, air-gapped). Annual billing gets 2 months free (Pro $450/yr, Max $850/yr).
- Integration time: Quickstart path designed for a sub-5-minute first implementation
- Compliance: Privacy-first architecture with customer-managed keys on Enterprise
- Self-hosted: Docker and Kubernetes via Helm chart on Enterprise
- Pricing model: Per row / per import, never per seat

## Documentation
- [Quickstart guide](https://docs.rowslint.io)
- [API reference](https://docs.rowslint.io)
- [SDK reference](https://docs.rowslint.io)
- [Examples](https://docs.rowslint.io)

## Product pages
- [Homepage](https://rowslint.io/)
- [Features](https://rowslint.io/#features)
- [How it works](https://rowslint.io/#how)
- [Pricing](https://rowslint.io/#pricing)
- [Security](https://rowslint.io/#security)
- [FAQ](https://rowslint.io/#faq)
- [CSV import widget](https://rowslint.io/csv-import-widget) — Commercial page for teams looking to embed CSV upload, column mapping, browser-side validation, and clean row delivery.
- [Excel import widget](https://rowslint.io/excel-import-widget) — Commercial page for teams accepting XLS/XLSX customer spreadsheets in web apps.
- [Embedded CSV importer](https://rowslint.io/embedded-csv-importer) — Commercial page for SaaS products that need a native, branded import workflow.

## Free tools
- [CSV to JSON converter](https://rowslint.io/tools/csv-to-json) — Free in-browser tool to convert CSV (or TSV/semicolon/pipe-separated) data to JSON. Handles quoted fields, custom delimiters, header-to-key mapping, and number/boolean detection. No upload, no signup; runs entirely client-side.

## Comparison pages
- [Flatfile alternative](https://rowslint.io/flatfile-alternative)
- [CSVBox alternative](https://rowslint.io/csvbox-alternative)
- [useCSV alternative](https://rowslint.io/usecsv-alternative)
- [OneSchema alternative](https://rowslint.io/oneschema-alternative)
- [Dromo alternative](https://rowslint.io/dromo-alternative)

## Blog-to-product relationships
- Framework tutorials for React, Next.js, Vue, Nuxt, SvelteKit, Angular, Laravel, Django, Rails, and Node.js support the [CSV import widget](https://rowslint.io/csv-import-widget) and [embedded CSV importer](https://rowslint.io/embedded-csv-importer) product pages.
- Articles that mention XLS, XLSX, or spreadsheet uploads support the [Excel import widget](https://rowslint.io/excel-import-widget) product page.
- The browser-side parsing architecture article supports the [embedded CSV importer](https://rowslint.io/embedded-csv-importer) and [Security](https://rowslint.io/#security) pages.

## Writing
- [Blog index](https://rowslint.io/blog)

### Engineering
- [Why we parse CSVs in your users' browsers, not on our servers](https://rowslint.io/blog/why-we-parse-csvs-in-the-browser) — Deep-dive on Rowslint's browser-side parsing architecture, the security implications, and when server-side parsing still makes sense.

### Framework tutorials
- [How to import CSV files in React](https://rowslint.io/blog/how-to-import-csv-files-in-react) — Step-by-step React + TypeScript integration with `@rowslint/importer-js`, async validation, and bulk insert patterns. Compared to Papa Parse, react-csv-importer, and Uppy.
- [How to import CSV files in Next.js](https://rowslint.io/blog/how-to-import-csv-files-in-nextjs) — App Router + Pages Router integration with Server Actions, Route Handlers, Zod validation, and Prisma batched inserts.
- [How to import CSV files in Vue.js](https://rowslint.io/blog/how-to-import-csv-files-in-vue) — Vue 3 Composition API integration with `<script setup>`, Pinia stores, and async validators. Compared to vue-csv-import and PapaParse.
- [How to import CSV files in Nuxt 3](https://rowslint.io/blog/how-to-import-csv-files-in-nuxt) — Universal SSR-safe integration with `<ClientOnly>`, `useImporter()` composable, Nitro server routes, and `runtimeConfig`.
- [How to import CSV files in Angular](https://rowslint.io/blog/how-to-import-csv-files-in-angular) — Wrap `@rowslint/importer-js` in a thin `@Injectable` service that exposes results as an `Observable<RowslintResult>`. Works with NgModule and standalone components; composes with RxJS, NgRx effects, and `takeUntil` cleanup.
- [How to import CSV files in SvelteKit](https://rowslint.io/blog/how-to-import-csv-files-in-sveltekit) — Svelte 5 runes integration with `+server.ts` endpoints, form actions, and Vercel/Cloudflare/Node adapter compatibility.
- [How to import CSV files in Laravel](https://rowslint.io/blog/how-to-import-csv-files-in-laravel) — Blade, Inertia, and Livewire patterns with CSRF tokens, Form Requests, `insertOrIgnore` batching, and async validators. Compared to Maatwebsite/Excel.
- [How to import CSV files in Django](https://rowslint.io/blog/how-to-import-csv-files-in-django) — Django templates, DRF `APIView`, and HTMX patterns with `bulk_create(ignore_conflicts=True)`, `transaction.atomic`, and CSRF protection. Compared to django-import-export and pandas.
- [How to import CSV files in Ruby on Rails](https://rowslint.io/blog/how-to-import-csv-files-in-rails) — Rails 7+ Importmaps + Stimulus integration with Hotwire/Turbo Streams, `insert_all` with `unique_by`, and async validators. Compared to roo, activerecord-import, smarter_csv.
- [How to import CSV files in Node.js / Express](https://rowslint.io/blog/how-to-import-csv-files-in-nodejs) — Express bulk-insert endpoint with Zod, idempotency keys, rate limiting, NDJSON streaming, and Prisma `createMany`. Compared to multer + csv-parse, xlsx, fast-csv.

## Account
- [Sign up](https://app.rowslint.io/auth/sign-up)
- [Log in](https://app.rowslint.io/auth/login)

## Legal
- [Terms of Service](https://rowslint.io/terms)
- [Privacy Policy](https://rowslint.io/privacy)

## About
- [About the founder](https://rowslint.io/about) — Mouad Ennaciri, software tech lead at a YC-backed logistics company. The story behind why Rowslint exists, written by the person building it.

## Contact
- Email: hello@rowslint.io
- Founder on X: https://x.com/mdennaciri
- Founder on LinkedIn: https://www.linkedin.com/in/mouad-ennaciri/
- Founder on GitHub: https://github.com/mouadennaciri