Title: Performance, Usability & Accessibility Issues
Last modified: December 4, 2024

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# Performance, Usability & Accessibility Issues

 *  [bbceg](https://wordpress.org/support/users/bbceg/)
 * (@bbceg)
 * [1 year, 5 months ago](https://wordpress.org/support/topic/performance-usability-accessibility-issues/)
 * Hi,
 * webpagetest.org has raised some performance, usability and accessibility issues.
   Please could these be resolved in a future release or filters provided where 
   this isn’t possible for any reason?
 * Performance – “JavaScript file is blocking page rendering”. Perhaps this could
   be marked with defer:
    - ultimate-social-media-icons/js/custom.js?ver=2.9.4
 * Usability – “Layout shifts exist and may be caused by images missing aspect ratio”.
   The images in question are as follows:
    - ultimate-social-media-icons/images/visit_icons/Visit_us_fb/icon_Visit_us_en_US.
      png
    - ultimate-social-media-icons/images/share_icons/fb_icons/en_US.svg
    - ultimate-social-media-icons/images/visit_icons/Visit_us_twitter/icon_Visit_us_en_US.
      png
    - ultimate-social-media-icons/images/share_icons/Twitter_Follow/en_US_Follow.
      svg
    - ultimate-social-media-icons/images/share_icons/Twitter_Tweet/en_US_Tweet.svg
 * Accessibility:
    - “IDs of active elements must be unique” – Occurs when the icons are output
      in both the header and footer. For example: `<a class=" sficn" data-effect
      ="" target="_blank" href="https://www.facebook.com/" id="sfsiid_facebook_icon"
      style="width:40px;height:40px;opacity:1;">`
    - “Id attribute value must be unique”. For example: `<div class="sfsi_tool_tip_2
      fb_tool_bdr sfsiTlleft" style="opacity:0;z-index:-1;" id="sfsiid_facebook"
      >`
 * Hope you can help.

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 * 0 replies
 * 1 participant
 * Last reply from: [bbceg](https://wordpress.org/support/users/bbceg/)
 * Last activity: [1 year, 5 months ago](https://wordpress.org/support/topic/performance-usability-accessibility-issues/)
 * Status: not resolved