When you need to get all the benefits of a powerful CDN without explicitly uploading files to a new location, use Proxy. It automatically retrieves files from existing remote locations and delivers them using Uploadcare CDN.
Utilizing a CDN can significantly improve your users' browsing experience, and open up more technical opportunities by providing on-the-fly image transformation and optimization.
It's easy to integrate, requiring only one URL modification:
When the first request is made, the source file is instantly uploaded to your Uploadcare storage. Once it is cached on our CDN, all subsequent requests will fetch the file from the closest CDN node.
This is the simplest way to implement responsive images, lower traffic costs, or just try us out without investing too much time into migration.
Go to Uploadcare Dashboard:
- Specify the allowed domain names that host your files. The Proxy will recognize these domains and block delivery from others.
- Optionally, you can edit you Proxy Endpoint to use custom domain name to serve files. See down below.
Combine the Proxy prefix with the file URL, including any query string, provided the file URL is from an allowed domain. The Proxy prefix should include your Endpoint.
The original file will remain at its original place, so that older references will work as well.
You can apply image processing operations by adding one of the respective URL directives between the prefix and the media URL.
As a result,
image.jpg will be processed and delivered with Uploadcare CDN.
Note: Uploadcare process images on the fly. We count storage space only for original files. Processed versions don't occopy any space in your storage limit.
By default, Uploadcare creates a proxy endpoint for every project automatically:
You can customize endpoint URL:
- CNAME or subdomain endpoint will look like:
- A record or domain endpoint will look like:
List of errors you might get when using Proxy:
You did not register a Proxy domain for your sites by dropping us a line at email@example.com.
You tried fetching a file from a domain that was not allowed. Check settings or contact us to add the domain as allowed for your account.
Your prefix was added to an invalid URL. Consider checking that URL.
You tried fetching an unreachable file. Consider checking its URL.
A problem occurred when trying to upload a file to our storage. Try again later and if it didn't help you always can contact us.
This feature is free and available across all plans. It is important to note that proxy uses your project upload units and storage limits since files are fetched and saved first before they are available on Uploadcare's CDN.