Custom plugin icon not showing up

The dev docs are for adding an icon that the .org repository can use. You’ll note that the relevant docs are part of the “The WordPress.org Plugin Directory” section.

To display an icon on the updates screen for a plugin that is not distributed through the repository you need to include the icon URL in the update data that WordPress receives when it checks for an update. WordPress looks for the icon in $plugin_data->update->icons[ $preferred_icon ], where $preferred_icon is the first of 'svg', '2x', '1x', 'default' that has a value.

This is how the data looks for Akiset, for example:

"akismet/akismet.php": {
    "id": "w.org/plugins/akismet",
    "slug": "akismet",
    "plugin": "akismet/akismet.php",
    "new_version": "4.1.11",
    "url": "https://wordpress.org/plugins/akismet/",
    "package": "https://downloads.wordpress.org/plugin/akismet.4.1.11.zip",
    "icons": {
        "2x": "https://ps.w.org/akismet/assets/icon-256x256.png?rev=969272",
        "1x": "https://ps.w.org/akismet/assets/icon-128x128.png?rev=969272"
    },
    "banners": {
        "1x": "https://ps.w.org/akismet/assets/banner-772x250.jpg?rev=479904"
    },
    "banners_rtl": [],
    "requires": "4.6",
    "tested": "5.8",
    "requires_php": false
}

Not knowing anything about how you are deploying updates, I can’t say exactly what you’d need to change. If you’re using a 3rd-party library you’d need to ask its author.

Related Posts:

  1. Add self-closing shortcode button to TinyMCE in WP 4.6
  2. How Do I Use jQuery UI In My Plugin
  3. Checking if a file is already in the Media Library
  4. WordPress Hook for user register
  5. How to implement add_image_size in a plugin
  6. How to make dynamically-generated content searchable in WordPress?
  7. Nav Menu meta failing to import
  8. How do I conditionally enqueue script for CPT single post type with plugin?
  9. Is it possible to remove next-post / previous-post with out creating a custom template?
  10. wp_localize_script $handle
  11. Escaping built-in WP function return strings
  12. Custom Rewriting to Plugin with Parameters
  13. Help adding image upload functionality to widget
  14. ERROR: Options page not found – saving settings page with tabs
  15. Script won’t load via plugin class
  16. How to override a function call in functions.php?
  17. Is there a need to do apply_filter(‘widget_title’, $instance[‘title’]) or any other ‘widget_xxx’ filters?
  18. Passing array of strings to a SQL statement in a WordPress plugin
  19. Add multiple shipping rates from add_rate function with custom ID
  20. Execute plugin for specific user role(s) only
  21. How can I render shortcode so that its not cached by Caching plugins?
  22. Does WordPress support WebP images?
  23. Sidebar widget to show popular post not working?
  24. WP_Query returns no results
  25. On Plugin Activation, How Do I Check for Proper Transport Mechanism?
  26. Enqueue scripts in footer
  27. Is It Always a Best Practice to Decouple the Frontend from the Admin Area When Developing a WordPress Application?
  28. the_editor() function
  29. SQL query for custom taxonomy slugs
  30. wp_insert_category() setting the ‘cat_ID’ gives not array error
  31. How can I limit the amount of characters used for description in the manage categories grid?
  32. What should happen when a WordPress Plugin is activated across the network (Network Wide Activation)
  33. Send push when new post is published in a certain category
  34. How can we display product price $104 on the cart while the credit card payment method is checked?
  35. Translation per IP location [closed]
  36. Add a select option of shortcodes like dropdown in tinymce
  37. Open modal when user clicks on span in visual editor
  38. How to paginate a custom page template with custom database tables
  39. wp E-commerce featured product plugin with muliple option?
  40. How to Trigger WP CRON at Local Timestamp?
  41. Problem with saving checkbox values with WordPress Widget API
  42. How to Control CSS of Admin On Creating only a Specific Custom Post Type
  43. Force download file from plugin (change output http headers)
  44. How to get all product in the woo-commerce? [closed]
  45. Run JavaScript validation script on form submit in plugin
  46. Check user’s role and store in variable
  47. What’s the hook for filtering every texts of site?
  48. Google credentials and redirect URI for Google OAuth2 in a WordPress plugin, questions
  49. How to add plugin options in wp editor page
  50. Bypass product key [closed]
  51. Service Worker Uncaught (in promise) DOMException
  52. Return conditional category in load_posts_by_ajax
  53. Problem with display data from get_option
  54. WordPress Plugin Boilerplate: Addition of 3rd party scripts and styles [closed]
  55. How to format custom fields when editing an attachment?
  56. Woocommerce – Provide Associated Category Link for Product List Plugin [closed]
  57. How can I call wp-load.php in my plugin file
  58. How to create new content type and flushes rewrite rules without visiting the permalinks page?
  59. About a programming language starts with [closed]
  60. Screenshots on plugin page taken old [closed]
  61. How do I duplicate a single post, with all its properties, and save it as a different post?
  62. Extract Information from post content (using regex?)
  63. Using jQuery prepend() with file include
  64. want to show CMB2 metabox on woocommerce product data tab
  65. Customise Grouped Product display in Woocommerce with custom column
  66. How to Get Last ID?
  67. Ajax action has 200 status but response of No response data available for this request
  68. How to display specific data from a custom table to logged in users with a custom role
  69. Google Web Core Vitals – management, how to in wordpress and advice
  70. How to add quick edit on the list of users to edit custom fields?
  71. How to Run Plugin on Server Without Web Browser
  72. Hiding the WordPress login and password fields from login page
  73. Adding customs fields on each product on the cart
  74. Buddypress: adding a new tab direct user to their author page
  75. Why would one specify multiple arguments when using get_previous_posts_link() which takes only one parameter?
  76. Unit Testing action hook
  77. 400 Bad Request and illegal invocation in wp_ajax based on processData set to false or true
  78. Integrate separate web app inside wordpress [closed]
  79. I have a plugin where in I have to change the title of the page dynamically by sending parameter to the_title filter
  80. PHP includes with AJAX actions
  81. Custom Post Type and Functions
  82. WordPress custom plugin developement
  83. How can I map a specific URL pattern to a plugin for processing
  84. Issue on Getting Images URL of the Post Gallery
  85. Google does not index data from custom table used for a plugin
  86. Best practice: What belongs in theme and what in plugin for large eCommerce website
  87. I can install my plugin in localhost but not in my server
  88. ouput buffering confusing me!
  89. Change the class of wordpress menu
  90. WordPress.org how to force expire Cached Banner-772×250 from my Plugin page
  91. What is the Timeline for the Active Version Pie Chart in the Repository?
  92. How to change url’s in WordPress when changing domain [duplicate]
  93. Email verification feature in wordpress social login plugin
  94. Custom Pin it button is not showing over the image instead it shows as block top_left
  95. check wp_login into a plugin
  96. Is wordpress plugin development active? [closed]
  97. How will i add an option under customizer the event calendar section?
  98. Return custom product in ajax call loop
  99. Is it possible to add Custom Dashboard Widgets to Custom Admin Menu Page?
  100. Is using upgrader_process_complete the correct way to perform plugin updates?