[JENKINS-76035] GitHub Organization avatar is blurry on HiDPI/Retina displays

Using a [HiDPI (aka Retina) display |https://en.wikipedia.org/wiki/Retina_display,] reproduce with the following steps:

1. Under a GitHub Organization's Project enable avatar:
   
   Projects > Repository Sources >  GitHub Organization > Enable Avatar


2. Go to the project's page: /job//


3. Look at the 48x48 pixel avatar on the top

Expected result: The avatar image shouldn't be blurry

Actual result: The avatar image is blurry/low resolution

It seems that the avatar image is fetched from GitHub with the same resolution as the dimension of the container: 

https://avatars.githubusercontent.com/u/?v=4&s=48

I.e., 48 pixels wide for a 48 pixel wide img element. However, this is not sufficient resolution for a Retina display. Doubling the resolution by s=96 makes the image crisp.

---
Originally reported by gustav_b, imported from: GitHub Organization avatar is blurry on HiDPI/Retina displays

• status: Open
  
• priority: Minor
  
• component(s): github-branch-source-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 1
  
• imported: 2025-12-02
  

Raw content of original issue

Using a [HiDPI (aka Retina) display |https://en.wikipedia.org/wiki/Retina_display,] reproduce with the following steps:



	
Under a GitHub Organization's Project enable avatar:

Projects > Repository Sources >  GitHub Organization > Enable Avatar

	
Go to the project's page: /job/<project>/

	
Look at the 48x48 pixel avatar on the top



Expected result: The avatar image shouldn't be blurry


Actual result: The avatar image is blurry/low resolution


It seems that the avatar image is fetched from GitHub with the same resolution as the dimension of the container: 



https://avatars.githubusercontent.com/u/<id>?v=4&s=48



I.e., 48 pixels wide for a 48 pixel wide img element. However, this is not sufficient resolution for a Retina display. Doubling the resolution by s=96 makes the image crisp.

environment

```
MacBook Pro M3

Jenkins Version 2.516.2

github-branch-source-plugin: 1834.v857721ea_74c6
```