413 413 Payload Too Large

Configure your web server and application framework to allow larger request bodies.

# Nginx (increase to 50MB)
client_max_body_size 50M;

# Express.js
app.use(express.json({ limit: '50mb' }))
app.use(express.urlencoded({ limit: '50mb', extended: true }))

# Apache
LimitRequestBody 52428800

# Vercel/Next.js API route
// Vercel has a 4.5MB body limit for serverless functions
// For larger uploads, use client-side upload to blob storage

For large files, implement chunked uploads that split the file into smaller pieces sent sequentially.

// Client-side chunked upload
const CHUNK_SIZE = 1024 * 1024 // 1MB
async function uploadChunked(file) {
  for (let i = 0; i < file.size; i += CHUNK_SIZE) {
    const chunk = file.slice(i, i + CHUNK_SIZE)
    await fetch('/api/upload', {
      method: 'POST',
      headers: {
        'Content-Range': `bytes ${i}-${i + chunk.size - 1}/${file.size}`,
        'Content-Type': 'application/octet-stream'
      },
      body: chunk
    })
  }
}