Setting Content Type based on file extension
Last updated 2018-08-16
In some situations you may want to override the content type that a backend returns. To do that you will need to create a new header object and an associated condition.
- Log in to the Fastly web interface.
- From the Home page, select the appropriate service. You can use the search box to search by ID, name, or domain.
- Click the Edit configuration button and then select the option to clone the active version. The Domains page appears.
- Click the Content link. The Content page appears.
Click the Create header button. The Create a header page appears.
Fill out the Create a header fields as follows:
- In the Name field, enter an appropriate name (e.g.,
Add Content Type
). - From the Type menu, select Cache, and from the Action menu, select Set.
- In the Destination field, enter
http.Content-Type
. - In the Source field, enter the content type you want to match, such as
"application/javascript; charset=utf-8"
. - From the Ignore if set menu, select No.
- In the Priority field, enter
10
.
- In the Name field, enter an appropriate name (e.g.,
Click the Create button.
Once you have created the header object, apply a condition. Otherwise, that particular object is applied to all requests.
Click the Attach a condition link to the right of the new header name. The Create a new cache condition window appears.
Fill out the Create a new cache condition fields as follows:
- In the Name field, enter a descriptive name, such as
Files ending with .js
. - In the Apply if field, enter the condition that matches your request, such as
req.url.ext == "js"
(to match the request for files ending in .js).
- In the Name field, enter a descriptive name, such as
Click the Save and apply to button to create the new condition.
- Click the Activate button to deploy your configuration changes.
TIP
You may also be interested in our guide to Removing headers from backend response.
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