2056097 - Image scaling is not working correctly

Status: UNCONFIRMED

(Core :: Graphics: ImageLib, defect)

Description

[mphuZ]

Attachment: Bug.jpg

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0

Steps to reproduce:

Hi,

On the forum, I opened the image at the link and it turned out to be blurred, with distorted fonts: https://forums.overclockers.ru/download/file.php?id=350630&mode=view

There is no such problem in the Edge browser. Scaling is not enabled in other programs or in the browser itself.

My monitor: 24@1080p, 100% scale in Windows

Actual results:

The image turned out to be blurred, as if the browser had scaled it incorrectly. If you install the SmartUpscale extension and check the box "Disable all blurring" in the settings, then the image becomes normal.

Expected results:

The image should have been clear. I have attached screenshots comparing the image output in different browsers.

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'WebExtensions::Untriaged' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[BugBot [:suhaib / :marco]]

The severity field is not set for this bug.
:tnikkel, could you have a look please?

For more information, please visit BugBot documentation.

Comment 3

[Timothy Nikkel (:tnikkel)]

Can you save the page using the single file extension and upload here? https://addons.mozilla.org/en-CA/firefox/addon/single-file/

Comment 4

[mphuZ]

(In reply to Timothy Nikkel (:tnikkel) from comment #3)

Can you save the page using the single file extension and upload here? https://addons.mozilla.org/en-CA/firefox/addon/single-file/

https://drive.google.com/file/d/1pfslfHvSFHMm0LQP_JDN3qjtgTdvt3D7/view?usp=sharing

Comment 5

[Timothy Nikkel (:tnikkel)]

Attachment: Bug111.zip

Comment 6

[Timothy Nikkel (:tnikkel)]

Just so I'm understanding what's in the zip. There is the original forum page where you saw the bug, and then that page reduced to just the image, where you can still see the bug?

And in your comparison screenshot here with Firefox and Edge, you find all of the text in the Firefox part of the image to be fuzzier then the same text in the Edge part of the image?

Comment 7

[mphuZ]

(In reply to Timothy Nikkel (:tnikkel) from comment #6)

Just so I'm understanding what's in the zip. There is the original forum page where you saw the bug, and then that page reduced to just the image, where you can still see the bug?

And in your comparison screenshot here with Firefox and Edge, you find all of the text in the Firefox part of the image to be fuzzier then the same text in the Edge part of the image?

1. 2560x1440....html - the original page on the forum.
2. 111.jpg.html - the attached image opened in a new tab. It is in the new tab that the image is blurred. In general, I even have a suspicion that any images on websites may blur and scale incorrectly, but I did not make a detailed comparison.
3. In the first message, the image is compared in two browsers, in the new tabs as 111.jpg.html