CSV import guides

Add CSV imports to an existing app: choose an integration, map columns, correct errors, and save records with your application’s permissions.

AI app builders

Add CSV import to a Bolt.new React app

Add a CSV importer to a Bolt.new React application, with a copyable agent prompt, column mapping, editable validation, code and test files.

Add CSV import to a Lovable app

Add a customer-facing CSV upload to an existing Lovable app without asking the agent to build a parser, mapping screen or correction table from scratch.

Import CSV into Supabase from a Lovable app

Add authenticated CSV uploads to a Lovable app backed by Supabase, with owner-scoped RLS, duplicate handling and full React code.

Add CSV import to a Replit React app

Integrate CSVJetty into a Replit React web app, then connect mapped and corrected CSV rows to the application’s existing backend.

Add CSV import to a v0-generated Next.js app

Add a CSV importer to a v0-generated Next.js app with a client component, existing UI conventions, an agent prompt and validation samples.

Database integrations

Import CSV with Drizzle ORM and PostgreSQL

Build a React CSV import with Drizzle, PostgreSQL transactions, verified authentication, row validation and duplicate-safe inserts.

Import CSV into Neon with React and Next.js

Upload, map and validate CSV contacts, then save them to Neon through an authenticated Next.js API with transactions and duplicate protection.

Import CSV into PostgreSQL with Next.js and Prisma

Build an authenticated Next.js CSV import with Prisma, server-side validation, bulk inserts, and a unique constraint for safe retries.

Import CSV into Supabase with React and Next.js

Upload a CSV, map columns, correct invalid values, and save contacts to Supabase with authenticated writes and Row Level Security.

Let customers upload CSV data into Supabase

Build customer-facing CSV uploads into Supabase without granting dashboard access: RLS, validation, column mapping and safe duplicate handling.

Use cases

Build a CSV contact importer with duplicate handling

Import contacts from CSV with mapping, invalid-email correction, per-user deduplication, optional updates and verified database write counts.

Build a product catalog CSV importer with SKU validation

Import product catalogs from CSV with SKU mapping, exact price-to-cents conversion, whole-number inventory, owner-scoped writes and duplicate protection.

Core guides

Choose a CSV importer for your React application

Evaluate CSVJetty for React and Next.js: supported workflows, setup requirements, delivery choices, limitations, and complete integration examples.

Map CSV columns to the fields your app expects

Handle CSV files with different headers using destination fields, aliases, and an editable column mapping workflow.

Handle duplicate contacts and CSV import retries

Distinguish duplicate contacts from repeated deliveries, enforce tenant-scoped unique keys, and return useful row errors from a Next.js import endpoint.

Troubleshoot a CSVJetty integration

Diagnose missing callbacks, preview-only imports, Next.js client boundaries, field overrides, invalid rows, webhook delivery and duplicate saves.

CSV parser or CSV import component: which do you need?

Compare parsing a CSV with a complete customer-facing import workflow. Understand when a parser is enough and when mapping, correction, and delivery are needed.

Validate CSV data and let users correct errors

Validate required fields, email addresses, and numbers in CSV uploads, then let users correct invalid cells before delivery.

Receive CSV imports through a signed webhook

Verify CSVJetty webhook signatures, validate imported contacts, and commit records with durable batch deduplication in PostgreSQL.

Add CSV import to Next.js

Integrate CSVJetty with the Next.js App Router or Pages Router, review CSV records, and connect imports to your own API.

Add CSV import to your React app

Build a React CSV importer that lets users map columns, correct invalid values, and deliver records to your application.