Several problems with icons during Chrome Extension development

Question

It's very strange.

1 problem

If I add this icon declaration to my manifest:

"icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },

Then, when I add Extension through "Load unpacked extensions ... " it doesn't show logo

But if you try to delete it, it does show

AND! If I delete "48" line from manifect, it starts showing it right away. Maybe it's because I use Chrome Beta (Version 28.0.1500.20 beta) or maybe because I do something wrong.

Seconds problem

Is about icon on Web Store. I have good 128x128 icon but for some reason in several places it doesn't used in HI-res. Icon is the following:

But those looks very bad

Also on the last screenshot it puts my logo inside Puzzle icon. I saw many other plugins where it doesn't put it like this.

So I guess my question is following: What icon sized should I provide to have it looks nice in all places?

Answer 1

1. Close the chrome://extensions/ tab, and re-open it. This may fix the issue (I've experienced this bug a couple of times)

2. On the details page, only icons of apps are fully shown. All extensions are displayed within a puzzle in the Chrome Web Store.

   If you want to get a different picture at the search results, upload a promotional image at the dashboard. See this answer for details.