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Add note about nginx Brotli compatibility for subpath reverse proxy setups #4328

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alecharmon merged 2 commits into from
Mar 17, 2026
Merged

Add note about nginx Brotli compatibility for subpath reverse proxy setups #4328

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Add note about nginx Brotli compatibility for subpath reverse proxy s…
devin-ai-integration[bot] Mar 17, 2026
1f8e4c4
clarify text, move into last step
devalog Mar 17, 2026
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15 changes: 12 additions & 3 deletions fern/products/docs/pages/getting-started/setting-up-your-domain.mdx
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Expand Up @@ -116,12 +116,21 @@ Contact Fern via your dedicated Slack channel or [email](mailto:support@buildwit

<Step title="Verify the setup">

Once Fern has completed your setup, you'll be able to access your documentation at `mydomain.com/docs`. It may take a few minutes for DNS changes to propagate globally.
Once Fern has completed your setup, you'll be able to access your documentation at `mydomain.com/docs`. It may take a few minutes for DNS changes to propagate globally. Try accessing your new docs site from a mobile device or incognito browser to confirm everything is working.

<Tip>Check that you can access your new docs site from a mobile device or incognito browser.</Tip>
<Warning title="HTTP/2 transfer errors with nginx">
If you see partial page loads or HTTP/2 transfer errors, nginx's lack of native [Brotli](https://github.com/google/brotli) support may be the cause. Fern's CDN serves Brotli-compressed responses by default, which nginx can't decode when proxying upstream.

Add this directive to your nginx config to request only supported encodings:

```nginx
proxy_set_header Accept-Encoding "gzip,deflate";
```
</Warning>
</Step>

</Steps>

</Accordion>
<Accordion title="Root domain">

Expand Down Expand Up @@ -203,4 +212,4 @@ instances:

<Info>
After configuring multiple domains in your `docs.yml`, contact Fern via your dedicated Slack channel or [email](mailto:support@buildwithfern.com) to complete the setup. You'll receive DNS configuration details for each domain.
</Info>
</Info>
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