Redirects with Traefik

This guide covers how to configure URL redirects in Coolify with Traefik, including the built-in redirect settings and manual middleware configuration.

Built-in www / non-www Redirect

Coolify has a built-in Direction setting for www and non-www redirects. When Readonly labels is enabled (the default), you can select the redirect behavior from the application settings without editing labels manually.

The available options are:

Direction	Behavior
Allow both	No redirect. Both `www.` and non-`www.` URLs work.
Redirect to www	Redirects non-www requests to the `www.` variant.
Redirect to non-www	Redirects `www.` requests to the non-www variant.

To use this setting, make sure both URLs are configured for your application (e.g., https://coolify.io,https://www.coolify.io) and Readonly labels is enabled.

When Readonly labels is disabled, the Direction field becomes read-only because Coolify can no longer auto-generate the redirect labels. In that case, follow the manual configuration below.

Manual Redirect Configuration

For custom redirects — or when Readonly labels is disabled — you configure redirects using Traefik's redirectregex middleware in your Container Labels.

The setup differs slightly between Standard Applications and Docker Compose deployments.

Standard Applications

You need to set both URLs for your resource (e.g., https://coolify.io,https://www.coolify.io), then add the middleware and reference it in the router.

www -> non-www

# Define the redirect middleware
traefik.http.middlewares.example-redirect.redirectregex.regex=^(http|https)://www\.(.+)
traefik.http.middlewares.example-redirect.redirectregex.replacement=${1}://${2}
traefik.http.middlewares.example-redirect.redirectregex.permanent=true

# Add it to the router (append to existing middlewares)
traefik.http.routers.<unique_router_name>.middlewares=gzip,example-redirect

non-www -> www

# Define the redirect middleware
traefik.http.middlewares.example-redirect.redirectregex.regex=^(http|https)://(?:www\.)?(.+)
traefik.http.middlewares.example-redirect.redirectregex.replacement=${1}://www.${2}
traefik.http.middlewares.example-redirect.redirectregex.permanent=true

# Add it to the router (append to existing middlewares)
traefik.http.routers.<unique_router_name>.middlewares=gzip,example-redirect

The <unique_router_name> is the router name Coolify generated for you (e.g., https-0-wc04wo4ow4scokgsw8wow4s8). Find it in your existing Container Labels.

Domain -> Other Domain

traefik.http.middlewares.redirect-otherdomain.redirectregex.regex=^(https?://)?source-domain\.com(.*)
traefik.http.middlewares.redirect-otherdomain.redirectregex.replacement=https://target-domain.com${2}
traefik.http.middlewares.redirect-otherdomain.redirectregex.permanent=true

If you also need to generate an SSL certificate for the source domain, add a router entry for it:

traefik.http.routers.redirect-otherdomain.middlewares=redirect-to-https,redirect-otherdomain
traefik.http.routers.redirect-otherdomain.rule=Host(`source-domain.com`) && PathPrefix(`/`)
traefik.http.routers.redirect-otherdomain.entryPoints=https
traefik.http.routers.redirect-otherdomain.tls.certresolver=letsencrypt
traefik.http.routers.redirect-otherdomain.tls=true

Docker Compose and Services

For Docker Compose deployments, define the middleware labels in your docker-compose.yml and use the coolify.traefik.middlewares shorthand to attach them to the router automatically.

Make sure both URLs are set for your resource (e.g., https://coolify.io,https://www.coolify.io).

www -> non-www

labels:
  - "traefik.http.middlewares.example-redirect.redirectregex.regex=^(http|https)://www\\.(.+)"
  - "traefik.http.middlewares.example-redirect.redirectregex.replacement=$${1}://$${2}"
  - "traefik.http.middlewares.example-redirect.redirectregex.permanent=true"
  - "coolify.traefik.middlewares=example-redirect"

non-www -> www

labels:
  - "traefik.http.middlewares.example-redirect.redirectregex.regex=^(http|https)://(?:www\\.)?(.+)"
  - "traefik.http.middlewares.example-redirect.redirectregex.replacement=$${1}://www.$${2}"
  - "traefik.http.middlewares.example-redirect.redirectregex.permanent=true"
  - "coolify.traefik.middlewares=example-redirect"

In Docker Compose YAML, dollar signs ($) must be escaped as $$ to prevent Docker from interpreting them as environment variable references.

Debugging

Check whether the Traefik labels were correctly applied by inspecting your container:

# Find your container ID
docker ps

# Inspect the container's labels
docker inspect <container-id>

You can additionally check the Traefik container logs:

docker logs -f coolify-proxy

For more details on applying custom middlewares, see the Custom Middlewares guide.

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