[Server actions] Error: Body exceeded 1mb limit

[kasipavankumar]

Summary

I am using server actions for file uploads. When trying to upload a file bigger than 1MB, the following error is being raised by the Next server:

error Error: Body exceeded 1mb limit

I tried the old way of exporting config, which seem to be deprecated.

export const config = {
    api: {
        bodyParser: {
            sizeLimit: '8mb',
        },
    },
}

Is there a way I can increase the body size limit for server actions?

Additional information

No response

Example

No response

[happypoo35]

As of now I don't see any way to set body limit programmatically.

For testing purposes you can change limit value in node_modules\next\dist\server\app-render\action-handler.js

const actionData = await parseBody(req, "10mb") || ""; // Changed limit to 10mb

[praveenswadesh]

As per this line, Shouldn't this be

  config.api.bodyParser.sizeLimit

[itsjavi]

this has no effect. it seems hardcoded to '1mb' https://github.com/vercel/next.js/blob/canary/packages/next/src/server/app-render/action-handler.ts#L331

I hope we get a configurable option in next version

[devjiwonchoi]

This feature has been blocked since App Router. It is currently hard-coded to 1mb as you can see here.

You need to customize the parseBody() size manually through node_modules.. not recommended but no "quicker" option is available at this moment.

The file is located in node_modules\next\dist\server\app-render\action-handler.js.

I've opened PR #51104 to resolve this hard-coded size issue.

UPDATE

Resolved with #51104

Reference

• API Routes Response Size Limit
• Action Handler Set to 1mb

[itsjavi]

thank you! I was going to also open a PR but got no time :(

[devjiwonchoi]

@kasipavankumar serverActiionsBodySizeLimit has been added on release v13.4.8.

[PatrickTimas]

on your next.config.js

module.exports = {
  experimental: {
    serverActions: {
      allowedOrigins: ['my-proxy.com', '*.my-proxy.com'],
    },
  },
}

From: https://nextjs.org/docs/app/api-reference/next-config-js/serverActions