Two things block a decent Marketplace listing.
1. No gallery icon
package.json has no top-level icon field. The "icon": "media/icon.svg" under viewsContainers is the activity-bar icon — a different field — and vsce will not accept an SVG for the gallery one anyway.
Without it the extension ships with the default grey placeholder and is indistinguishable from an abandoned one-off in a search results list.
Fix: add media/icon.png at 128x128 — a filled version of the existing mark, on a background that works against both the light and dark Marketplace themes — and reference it as a top-level icon.
2. Category and listing metadata
"categories": ["Other"] is the least discoverable option; ["Debuggers", "Linters"] or similar puts the extension in a browsable list. Consider a galleryBanner colour matching the icon, and add a screenshot or GIF to README.md — the Marketplace renders the README, and right now the listing has no visual at all.
Blocks #1 (publishing).
Verify
vsce package produces a .vsix; install it from disk and confirm the icon and category show correctly in the Extensions view.
Two things block a decent Marketplace listing.
1. No gallery icon
package.jsonhas no top-leveliconfield. The"icon": "media/icon.svg"underviewsContainersis the activity-bar icon — a different field — andvscewill not accept an SVG for the gallery one anyway.Without it the extension ships with the default grey placeholder and is indistinguishable from an abandoned one-off in a search results list.
Fix: add
media/icon.pngat 128x128 — a filled version of the existing mark, on a background that works against both the light and dark Marketplace themes — and reference it as a top-levelicon.2. Category and listing metadata
"categories": ["Other"]is the least discoverable option;["Debuggers", "Linters"]or similar puts the extension in a browsable list. Consider agalleryBannercolour matching the icon, and add a screenshot or GIF toREADME.md— the Marketplace renders the README, and right now the listing has no visual at all.Blocks #1 (publishing).
Verify
vsce packageproduces a.vsix; install it from disk and confirm the icon and category show correctly in the Extensions view.