Why are convex logs appearing in NextJS dev console logs? | Convex Community | Page 1

tropic helm Nov 20, 2025, 11:29 PM

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Why are convex logs appearing in NextJS dev console logs?

loud shellBOT Nov 20, 2025, 11:29 PM

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Hi @tropic helm. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

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Convex forwards server-side logs to the browser console when you’re using a dev deployment so you can easily debug during development.

Convex functions use the normal console.log, console.error, etc., and all of these logs are collected by Convex. [Debugging functions]
On a dev deployment, those server logs are also sent back to the client and shown in the browser’s developer tools console for the user who invoked the function. [Debugging functions]
On production deployments, logs are not sent to the client, so you won’t see them in the Next.js browser console there. [Debugging functions]

So in Next.js dev, seeing Convex logs in the browser console is expected behavior to help with debugging.

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@tropic helm Kapa.ai is still learning and improving, please let me know how I did by reacting below.

tropic helm Nov 20, 2025, 11:30 PM

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@loud shell but this is in pnpm run dev for nextjs

loud shellBOT Nov 20, 2025, 11:30 PM

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Let me check the knowledge base for you again. One moment! :books:

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In pnpm run dev for Next.js you’re still hitting your Convex dev deployment, so the behavior is the same:

When you use ConvexReactClient against a dev deployment, Convex forwards all server-side console.log / console.error etc. from your Convex functions to the browser, where they show up in the Next.js dev tools console. [Debugging]
This only happens for dev deployments; production deployments do not send logs to the client. [Debugging]