NewThe Golden Age of Log Files — why we went back to server-side analytics

Next.js Native
Open-Source Analytics

Name: Nextlytics
Author: Jitsu

100% server-side. No client JavaScript. No cookies. No GDPR banners. Just accurate analytics that respect your users.

Get Started View Demo

Why Nextlytics?

Traditional analytics compromise privacy, slow down your site, and lose data. Nextlytics fixes all of that.

100% Server-Side

All tracking happens in Next.js middleware. No client JavaScript, no external calls. 100% accurate data, immune to ad blockers.

GDPR Compliant

No cookies, no fingerprinting, no personal data stored. Skip the cookie banners entirely.

Zero Overhead

No impact on page load. No additional network requests from browsers. Your site stays fast.

Backend-Agnostic

Send data to Posthog, Segment, Jitsu, or write directly to Postgres. Use what you already have.

Anonymous & Authenticated

Track both anonymous visitors and logged-in users. Integrates seamlessly with NextAuth.

Custom Events

Track form submissions, button clicks, and any custom event from your server components.

Multiple Backends

Posthog, Segment, Amplitude, or write directly to your database. Switch anytime.

Open Source

MIT licensed. No vendor lock-in, no hidden costs. Your data, your rules.

Add Analytics in 3 Steps

No complex setup. No dashboard configuration. Just a few lines of code.

1Install the package

npm install @nextlytics/core

2Configure your backend

All integrations →

// src/nextlytics.ts
import { Nextlytics } from "@nextlytics/core/server";
import { segmentBackend } from "@nextlytics/core/backends/segment";
// Nextlytics runs in Edge middleware, so it can't import your main auth.ts
// if it pulls in Prisma, nodemailer, or other Node.js-only deps.
// Create a lightweight auth instance from your edge-safe base config.
// See: https://authjs.dev/guides/edge-compatibility
import NextAuth from "next-auth";
import authConfig from "./auth.config";

const { auth } = NextAuth(authConfig);

export const { middleware, analytics } = Nextlytics({
  backends: [
    segmentBackend({
      writeKey: process.env.SEGMENT_WRITE_KEY!,
      // For Jitsu: host: "https://ingest.g.jitsu.com"
    }),
  ],
  // Optional but recommended: identify authenticated users
  callbacks: {
    async getUser() {
      const session = await auth();
      if (!session?.user) return null;
      return {
        userId: session.user.id,
        traits: { email: session.user.email, name: session.user.name },
      };
    },
  },
});

3Integrate with your app

src/app/layout.tsx

import { NextlyticsServer } from "@nextlytics/core/server";

export default function RootLayout({ children }) {
  return (
    <html lang="en">
      <body>
        <NextlyticsServer>{children}</NextlyticsServer>
      </body>
    </html>
  );
}

src/middleware.ts

import { middleware } from "./nextlytics";

export { middleware };

That's it. Every page view is now tracked server-side.

Ready to get accurate analytics?

Stop losing data. Stop asking for cookie consent. Start tracking with confidence.