Using Netlify redirects as a reverse proxy

Note: If you are using the EU cloud then use eu instead of us in all domains (e.g. us.i.posthog.com -> eu.i.posthog.com)

Netlify supports redirects and rewrites which we can use as a reverse proxy from an /ingest route. In your netlify.toml file, add a redirect like this:

JavaScript

[[redirects]]
  from = "/ingest/static/*"
  to = "https://us-assets.i.posthog.com/static/:splat"
  host = "us-assets.i.posthog.com"
  status = 200
  force = true

[[redirects]]
  from = "/ingest/*"
  to = "https://us.i.posthog.com/:splat"
  host = "us.i.posthog.com"
  status = 200
  force = true

Once done, set the /ingest route of your domain as the API host in your PostHog initialization like this:

JavaScript

posthog.init('<ph_project_api_key>',
  {
    api_host: 'https://www.your-domain.com/ingest',
    ui_host: 'https://us.i.posthog.com' // or 'https://eu.i.posthog.com' if your PostHog is hosted in Europe
  }
)

Once updated, deploy your changes on Netlify and check that PostHog requests are going to https://www.your-domain.com/ingest by checking the network tab on your domain.

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