ix.io - File displayed as txt Firefox

[bodyowns]

URL: http://ix.io/1zv0

Browser / Version: Firefox 64.0
Operating System: Linux
Tested Another Browser: Yes

Problem type: Something else
Description: doesn't display the png image, displays a text, but in chrome it does
Steps to Reproduce:

Browser Configuration

• None

Reported by @bodyowns

From webcompat.com with ❤️

[bodyowns]

in google chrome it works

[softvision-oana-arbuzov]

Thanks for the report @bodyowns , I was able to reproduce the issue.

Note: Saving the file on Chrome, it seems that it is a txt file.
1zv0.txt

<img style="-webkit-user-select: none;cursor: zoom-in;" src="http://ix.io/1zv0" width="810" height="455">

Tested with:
Browser / Version: Firefox Nightly 67.0a1 (2019-02-12)
Operating System: Linux Ubuntu 16.04

Moving to Needsdiagnosis for further investigation.

[wisniewskit]

The web server is telling Chrome and Firefox that it's a text file, not the PNG image it is:

Content-Type | text/plain; charset=utf-8

Chrome still goes ahead and decides it's an image, while Firefox trusts the server.

(Note that when saving the file, Chrome saves not what the server sends it, but rather a link, which seems bogus to me.)

I've filed bz1527955 to investigate whether Firefox should also sniff the actual type of the file and display it as a PNG.

[wisniewskit]

Actually, I've decided to mark this as needscontact, since the site should really be serving this file with the correct MIME type for an image (image/png) rather than pretending it's plain text.

[softvision-sergiulogigan]

This is still reproducible.

Tested with:
Browser / Version: Firefox Nightly 72.0a1 (2019-11-05)
Operating System: Windows 10 Pro