devIndicators

devIndicators?: false | { position?: 'bottom-left' | 'bottom-right' | 'top-left' | 'top-right' }

During next dev, Next.js renders a small indicator giving context about the route you are looking at — including whether it is being prerendered or rendered on demand. This option moves it or removes it. It has no effect on a production build.

When to reach for it

Almost always because the indicator sits on top of something: a fixed support widget, a toolbar, a floating action button in the same corner. Move it to the opposite corner rather than hiding it — the render-mode signal is genuinely useful while you work. Set devIndicators: false when you are recording a demo or screenshotting the app.

What trips people up

• Hiding the indicator does not hide anything that matters: compile errors and runtime errors are still surfaced.
• If a route you expected to be static is marked dynamic, the indicator is reporting, not misbehaving. Confirm with next build --debug, where ○ means prerendered and ƒ means server-rendered on demand. The usual causes are a request-time API such as cookies() or headers(), or an uncached data request like an ORM call.
• appIsrStatus, buildActivity and buildActivityPosition were removed in Next.js 16 — a config carried over from 15 that still sets them needs cleaning up.

import type { NextConfig } from 'next'

const nextConfig: NextConfig = {
  devIndicators: {
    position: 'bottom-right', // 'bottom-left' | 'bottom-right' | 'top-left' | 'top-right'
  },
}

export default nextConfig

import type { NextConfig } from 'next'

const nextConfig: NextConfig = {
  devIndicators: false,
}

export default nextConfig

next build --debug

# Route (app)
# ┌ ○ /_not-found
# └ ƒ /products/[id]
#
# ○  (Static)   prerendered as static content
# ƒ  (Dynamic)  server-rendered on demand

import type { NextConfig } from 'next'

const nextConfig: NextConfig = {
  devIndicators: {
    // appIsrStatus: true,          // removed in v16.0.0
    // buildActivity: true,         // removed in v16.0.0
    // buildActivityPosition: 'br', // removed in v16.0.0
    position: 'top-right',
  },
}

export default nextConfig