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version: "1.0.0" name: netlify-config description: Reference for netlify.toml configuration. Use when configuring build settings, redirects, rewrites, headers, deploy contexts, environment variables, or any site-level configuration. Covers the complete netlify.toml syntax including redirects with splats/conditions, headers, deploy contexts, functions config, and edge functions config.

Netlify Configuration (netlify.toml)

Place netlify.toml at the repository root (or at the base directory for monorepos).

Build Settings

toml

[build]
  base = "project/"          # Base directory (default: root)
  command = "npm run build"  # Build command
  publish = "dist/"          # Output directory

Redirects

toml

# Basic redirect
[[redirects]]
from = "/old"
to = "/new"
status = 301              # 301 (default), 302, 200 (rewrite), 404
 
# SPA catch-all
[[redirects]]
from = "/*"
to = "/index.html"
status = 200
 
# Splat (wildcard)
[[redirects]]
from = "/blog/*"
to = "/news/:splat"
 
# Path parameters
[[redirects]]
from = "/users/:id"
to = "/api/users/:id"
status = 200
 
# Force (override existing files)
[[redirects]]
from = "/app/*"
to = "/index.html"
status = 200
force = true
 
# Proxy to external service
[[redirects]]
from = "/api/*"
to = "https://api.example.com/:splat"
status = 200
[redirects.headers]
  X-Custom = "value"
 
# Country/language conditions
[[redirects]]
from = "/*"
to = "/fr/:splat"
status = 200
conditions = { Country = ["FR"], Language = ["fr"] }

Rule order matters — Netlify processes the first matching rule. Place specific rules before general ones.

Headers

toml

[[headers]]
for = "/*"
[headers.values]
  X-Frame-Options = "DENY"
  X-Content-Type-Options = "nosniff"
 
[[headers]]
for = "/assets/*"
[headers.values]
  Cache-Control = "public, max-age=31536000, immutable"

Headers apply only to files served from Netlify's CDN (not to function or edge function responses — set those in code).

Deploy Contexts

Override settings per deploy context:

toml

[context.production]
command = "npm run build"
environment = { NODE_ENV = "production" }
 
[context.deploy-preview]
command = "npm run build:preview"
 
[context.branch-deploy]
command = "npm run build:staging"
 
[context.dev]
environment = { NODE_ENV = "development" }
 
# Specific branch
[context."staging"]
command = "npm run build:staging"

Environment Variables

toml

[build.environment]
NODE_VERSION = "20"
 
[context.production.environment]
API_URL = "https://api.prod.com"
 
[context.deploy-preview.environment]
API_URL = "https://api.staging.com"

Do not put secrets in netlify.toml (it's committed to source control). Use the Netlify UI or CLI for sensitive values. See the netlify-cli-and-deploy skill for CLI environment variable management.

Functions Configuration

toml

[functions]
directory = "netlify/functions"   # Default
node_bundler = "esbuild"
 
# Scheduled function
[functions."cleanup"]
schedule = "@daily"

Edge Functions Configuration

toml

[[edge_functions]]
path = "/admin"
function = "auth"
 
# Import map for Deno URL imports
[functions]
deno_import_map = "./import_map.json"

Dev Server

toml

[dev]
command = "npm start"       # Dev server command
port = 8888                 # Netlify Dev port
targetPort = 3000           # Your app's dev server port
framework = "#auto"         # "#auto", "#static", "#custom"

Plugins

toml

[[plugins]]
package = "@netlify/plugin-lighthouse"
[plugins.inputs]
  audits = ["performance", "accessibility"]

Image CDN

toml

[images]
remote_images = ["https://example\\.com/.*"]

See the netlify-image-cdn skill for full Image CDN usage.

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