Object Storage Service:0048-00000103

Problem description

When you access an OSS image object through a browser using a standard domain name, the browser downloads the file instead of displaying it inline.

Causes

For buckets created after 17:00:00 on September 29, 2019, OSS automatically adds the following response headers when you access an object whose content type is one of the affected image types through a standard domain name:

x-oss-force-download: true
Content-Disposition: attachment

Content-Disposition: attachment is a standard HTTP header that tells browsers to download the file rather than render it inline.

This behavior applies to objects with the following content types:

• image/jpeg

• image/gif

• image/tiff

• image/png

• image/webp

• image/svg+xml

• image/bmp

• image/x-ms-bmp

• image/x-cmu-raster

• image/exr

• image/x-icon

• image/heic

Examples

A bucket created after 17:00:00 on September 29, 2019 contains an object named apple.jpeg with content type image/jpeg. When you access this object through a standard domain name, OSS returns:

GET /apple.jpeg HTTP/1.1

HTTP/1.1 200 OK
Content-Type: image/jpeg
Content-Disposition: attachment
x-oss-force-download: true

The Content-Disposition: attachment header causes the browser to download the file instead of displaying it.

Solutions

Map a custom domain name to your bucket. When you access the object through a custom domain name, OSS does not return the header that triggers the download operation, and the browser renders the image inline.

For setup instructions, see Map custom domain names.

References

• Map custom domain names