Preview not taking mime-type into account but only file extension

[ssendev]

The preview at the right only works if the file name ends in .png or another image extension if it has no extension the preview is disabled.

Expected Behavior

Enable the preview button if a compatible mime type is set

Current Behavior

The prieview button is disabled even if an image mime type is set

Steps to Reproduce (for bugs)

1. upload an image with a key of foo.png
2. upload the same image with a key of foo and set the mime type to image/png
3. see that foo.png has a the preview while foo has not

Context

The correct mime type is listed at the bottom and is also returned when generating a share url.

Your Environment

• Version used (minio --version): RELEASE.2023-06-29T05-12-28Z (commit-id=aae684641325e1c37375d455c790e58d902bd7b6)
• Server setup and configuration: Docker

[harshavardhana]

The reason we do that is because to know content-type we have to spend an additional API call on the object.

We want things to be simple. Preview itself is good to have functionality not a fundamental feature here.

What you are asking goes beyond this and making its scope larger. Just name the file appropriately, it is human friendly and useful for everyone.

[ssendev]

Apparently this is the wrong repository and searching in the right one turned up it's a duplicate #2573

[ssendev]

to know content-type we have to spend an additional API call on the object.

But the correct content type is already displayed so no api call is needed.

[harshavardhana]

In that case we can provide preview.

[prakashsvmx]

Thank you @ssendev . for the supported preview types, we will also add Content-Type based preview along with extension based preview.