Commit f96c5e9874e for woocommerce

commit f96c5e9874e008600325e2468c96ec8b31acfbb0
Author: Vlad Olaru <vlad.olaru@automattic.com>
Date:   Thu Oct 8 09:32:21 2026 +0300

    Remove the unused Marketplace header background image (#69556)

    * perf: Compress the Marketplace header background

    Optimize 1 shipped image without changing file names, formats or dimensions.
    The set shrinks from 45 KB to 34 KB (24%). Each file keeps a luma SSIM of at
    least 0.98 against its trunk copy and a ssimulacra2 score of at least 80.
    The files and numbers are in the PR description.

    Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

    * chore: Add changelog entry for marketplace image optimization

    Nothing here changes what merchants see, so the entry is comment-only.

    Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

    * perf: Keep the Marketplace header background lossless

    The first version reduced the header to a 16-colour palette. The trunk
    image holds 24 colours that form a smooth gradient, so the smaller
    palette merged neighbouring steps and showed visible banding.

    Use the lossless result instead: 45 KB down to 40 KB (12%) with identical
    pixels. Stronger packers (zopfli, pngout, advpng) and ImageOptim give
    the same size.

    Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

    * chore: Remove the unused Marketplace header background image

    The image is only referenced by a background-image declaration on
    .wc-addons-wrap .marketplace-header. The markup for that header was
    deleted in #47276 (html-admin-page-addons.php), so nothing renders the
    class and the image has not loaded since.

    Remove the image and the declaration. The rest of the legacy
    marketplace CSS stays for the dead-code cleanup the Desire team is
    following up on.

    Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

    * chore: Remove the leftover background rules on .marketplace-header

    With the background image gone, background-position and
    background-size on the same rule have nothing to position or size.
    Remove them as a review suggested. The rest of the rule and the title
    and tab rules stay for the follow-up dead-code cleanup.

    Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

    ---------

    Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>

diff --git a/plugins/woocommerce/assets/images/marketplace-header-bg@2x.png b/plugins/woocommerce/assets/images/marketplace-header-bg@2x.png
deleted file mode 100644
index 55e0846d3b9..00000000000
Binary files a/plugins/woocommerce/assets/images/marketplace-header-bg@2x.png and /dev/null differ
diff --git a/plugins/woocommerce/changelog/dev-remove-unused-marketplace-header-background b/plugins/woocommerce/changelog/dev-remove-unused-marketplace-header-background
new file mode 100644
index 00000000000..5707e82bbbe
--- /dev/null
+++ b/plugins/woocommerce/changelog/dev-remove-unused-marketplace-header-background
@@ -0,0 +1,3 @@
+Significance: patch
+Type: dev
+Comment: Remove an unused Marketplace header background image and its CSS declaration; no merchant-facing change.
diff --git a/plugins/woocommerce/client/legacy/css/admin.scss b/plugins/woocommerce/client/legacy/css/admin.scss
index 06c81c6799a..a8c0cee01df 100644
--- a/plugins/woocommerce/client/legacy/css/admin.scss
+++ b/plugins/woocommerce/client/legacy/css/admin.scss
@@ -27,9 +27,6 @@ $font-sf-pro-display: "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe U
 .wc-addons-wrap {

 	.marketplace-header {
-		background-image: url("../images/marketplace-header-bg@2x.png");
-		background-position: right;
-		background-size: cover;
 		box-sizing: border-box;
 		display: flex;
 		flex-direction: column;