I am interested in optimizing the loading speed of my webpage by setting an expiration date for images. However, I am unsure about where to specify this.
The images on my website are loaded via CSS from Cloudfront using an S3 bucket in AWS. Can you provide guidance on how to set the expiration date?
Here is an example of how I currently load images:
.bg-header {
background: url("https://example.cloudfront.net/assets/12345.jpg");
background-size: cover;
height:480px;
To optimize the caching of images on your website, create a new file named .htaccess in the folder with your files. Paste the following code inside:
<FilesMatch "\.(gif|jpg|jpeg|png)$">
Header set Cache-Control "max-age=172800"
</FilesMatch>
You have the option to include more file types in the regular expression, allowing apache to apply the specified header to all image requests. Keep in mind that this technique necessitates hosting your files on a server.
If you want to set Cache-Control or Expires headers on your Amazon S3 objects using the Amazon S3 console, follow these steps:
Login to the AWS Management Console and access the Amazon S3 console by visiting .
Within the Amazon S3 console, select the bucket name that holds the files you wish to modify.
Select the specific object from the list that you would like to add a header to.
Click on Properties, then choose Metadata.
Next, click on Add Metadata, and from the Key dropdown menu, select either Cache-Control or Expires.
In the Value field, input one of the following options: · For Cache-Control field, enter: max-age=number of seconds for objects in CloudFront cache · For Expires field, input a date and time in HTML format.
Finally, click Save.
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