Problem description
When a standard domain name of Object Storage Service (OSS) is used to access an object from a browser, the browser downloads the object instead of providing a preview of the object.
Causes
If a standard domain name is used to access a bucket that was created after 00:00:00 on October 1, 2017, to request an object whose name ends with htm or html or whose content type is text/html, the x-oss-force-download and Content-Disposition headers are included in the response.
x-oss-force-download: true
Content-Disposition: attachmentContent-Disposition: attachment triggers a download operation instead of a preview in a standard browser.
Examples
For example, if you use a standard domain name from a browser to access an object named index.html in a bucket that was created after 00:00:00 on October 1, 2017, the preceding two headers are included in the response. Content-Disposition: attachment triggers a standard browser to download the object instead of providing a preview.
GET /index.html HTTP/1.1
HTTP/1.1 200 OK
Content-Disposition: attachment
x-oss-force-download: trueSolutions
If you do not want OSS to return a header that triggers the download operation, use a custom domain name to access the object. For more information, see Map custom domain names.