This style forces to revert 4-row thumbnails on home feed along with compact thumbnails on subscriptions grid (plus, this also includes disabling gigantic search page thumbnails prior to 2024).
/* ==UserStyle==
@name YT - Revert home and subscriptions thumbnails pages before 2023
@version 20260424.00.00
@namespace userstyles.world/user/magma_craft
@description This style forces to revert 4-row thumbnails on home feed along with compact thumbnails on subscriptions grid (plus, this also includes disabling gigantic search page thumbnails prior to 2024).
@author magma_craft
@license CC Zero
==/UserStyle== */
@-moz-document domain("youtube.com") {
/* Homepage grid: Always revert 4-row style */
[page-subtype="home"] #contents.ytd-rich-grid-renderer { --ytd-rich-grid-items-per-row: 4 !important }
[page-subtype="home"] > ytd-two-column-browse-results-renderer > #primary.ytd-two-column-browse-results-renderer > ytd-rich-grid-renderer > #contents.ytd-rich-grid-renderer { max-width: 1536px !important }
[page-subtype="home"] #contents > ytd-rich-grid-row, [page-subtype="home"] #contents > ytd-rich-grid-row > #contents { display: contents !important }
[page-subtype="home"] > ytd-two-column-browse-results-renderer > #primary.ytd-two-column-browse-results-renderer > ytd-rich-grid-renderer > #contents.ytd-rich-grid-renderer > #contents > ytd-rich-grid-row > #contents > ytd-rich-item-renderer > #content { margin-left: 0 !important; margin-right: 0 !important }
[page-subtype="home"] ytd-video-meta-block[rich-meta][mini-mode] #byline-container.ytd-video-meta-block { font-size: 1.4rem !important }
[page-subtype="home"] ytd-video-meta-block[rich-meta][mini-mode] #metadata-line.ytd-video-meta-block { font-size: 1.4rem !important }
[page-subtype="home"] #content.ytd-rich-section-renderer { margin: 0 8px !important }
/* Subscriptions page: Compact thumbnails style */
[page-subtype="subscriptions"] #avatar-link.ytd-rich-grid-media, [page-subtype="subscriptions"] #avatar-container.ytd-rich-grid-media, [page-subtype="subscriptions"] .yt-lockup-metadata-view-model__avatar, [page-subtype="subscriptions"] .ytLockupMetadataViewModelAvatar { display: none !important; margin-right: 0 !important }
[page-subtype="subscriptions"] #video-title.ytd-rich-grid-media, [page-subtype="subscriptions"] .yt-lockup-metadata-view-model__title, [page-subtype="subscriptions"] .ytLockupMetadataViewModelStandard.ytLockupMetadataViewModelRichGridLegacyTypography .ytLockupMetadataViewModelTitle { font-size: 1.4rem !important; line-height: 1.8rem !important }
[page-subtype="subscriptions"] ytd-video-meta-block[rich-meta] #channel-name.ytd-video-meta-block, [page-subtype="subscriptions"] ytd-video-meta-block[rich-meta] #metadata-line.ytd-video-meta-block, [page-subtype="subscriptions"] .yt-content-metadata-view-model__metadata-text, [page-subtype="subscriptions"] .ytContentMetadataViewModelMediumText .ytContentMetadataViewModelMetadataText { font-size: 1.2rem !important }
[page-subtype="subscriptions"] ytd-rich-shelf-renderer { display: none !important }
[page-subtype="subscriptions"] ytd-rich-item-renderer { margin-left: 0px !important; margin-right: 0px !important; margin-bottom: 24px; width: calc(100% / var(--ytd-rich-grid-items-per-row) - 4px - 0.01px) }
[page-subtype="subscriptions"] h3.ytd-rich-grid-video-renderer { margin: 8px 0 8px !important }
[page-subtype="subscriptions"] ytd-primetime-promo-renderer.ytd-rich-section-renderer, [page-subtype="subscriptions"] ytd-inline-survey-renderer.ytd-rich-section-renderer { border-top: 1px solid var(--yt-spec-10-percent-layer); border-bottom: 1px solid var(--yt-spec-10-percent-layer) }
[page-subtype="subscriptions"] ytd-thumbnail[size=large] a.ytd-thumbnail, [page-subtype="subscriptions"] ytd-thumbnail[size=large]:before, [page-subtype="subscriptions"] .ytThumbnailViewModelLarge { border-radius: 8px !important }
ytd-thumbnail[size=large] ytd-thumbnail-overlay-time-status-renderer.ytd-thumbnail, ytd-thumbnail[size=large] ytd-thumbnail-overlay-button-renderer.ytd-thumbnail, ytd-thumbnail[size=large] ytd-thumbnail-overlay-toggle-button-renderer.ytd-thumbnail, .yt-thumbnail-overlay-badge-view-model--large { margin: 4px !important }
[page-subtype="subscriptions"] div.ghost-grid.style-scope.ytd-ghost-grid-renderer { display: none !important }
[page-subtype="subscriptions"] html:not(.style-scope) { --ytd-rich-grid-item-max-width: 210px !important; --ytd-rich-grid-item-margin: 4px !important }
[page-subtype="subscriptions"] #contents.ytd-rich-grid-renderer, [page-subtype="subscriptions"] #grid-header.ytd-rich-grid-renderer { width: calc(100% + 4px + 0.01px) !important; max-width: calc( var(--ytd-rich-grid-items-per-row) * (var(--ytd-rich-grid-item-max-width) + var(--ytd-rich-grid-item-margin))) !important }
@media (max-width: 456px) {ytd-rich-grid-renderer {--ytd-rich-grid-items-per-row: 1 !important;--ytd-rich-grid-posts-per-row: 1 !important;}}
[page-subtype="subscriptions"] ytd-rich-grid-renderer, [page-subtype="subscriptions"] ytd-rich-grid-renderer.style-scope.ytd-two-column-browse-results-renderer { --ytd-rich-grid-items-per-row: var(--grid-items-videos--per-row) !important; --ytd-rich-grid-posts-per-row: var(--grid-posts-videos-per-row) !important }
@media (max-width: 456px) {html:not(.style-scope) {--grid-items-videos--per-row: 1;--grid-posts-videos-per-row: 1;}}
@media (min-width: 457px) {html:not(.style-scope) {--load-videos-items-per-row: 903px;--grid-items-videos--per-row: 2;--grid-posts-videos-per-row: 2;}}@media (min-width: 647px) {html:not(.style-scope) {--load-videos-items-per-row: 1300px;--grid-items-videos--per-row: 3;--grid-posts-videos-per-row: 3;}}
@media (min-width: 957px) {html:not(.style-scope) {--load-videos-items-per-row: 1680px;--grid-items-videos--per-row: 4;--grid-posts-videos-per-row: 3;}}
@media (min-width: 1171px) {html:not(.style-scope) {--load-videos-items-per-row: 2013px;--grid-items-videos--per-row: 5;--grid-posts-videos-per-row: 3;}}
@media (min-width: 1600px) {html:not(.style-scope) {--load-videos-items-per-row: 2348px;--grid-items-videos--per-row: 6;--grid-posts-videos-per-row: 3;}}
[page-subtype="subscriptions"] ytd-rich-grid-renderer #contents ytd-rich-grid-row, [page-subtype="subscriptions"] ytd-rich-grid-renderer #contents ytd-rich-grid-row #contents { display: contents !important }
[page-subtype="subscriptions"] #contents.ytd-rich-grid-renderer, [page-subtype="subscriptions"] #grid-header.ytd-rich-grid-renderer { --ytd-rich-grid-item-max-width: 210px !important }
/* Quick fixes */
[page-subtype="home"] #content.ytd-rich-section-renderer { margin: 0 8px !important }
[page-subtype="home"] ytd-rich-item-renderer[rendered-from-rich-grid] { margin-left: calc(var(--ytd-rich-grid-item-margin)/2 + var(--ytd-rich-grid-gutter-margin)) !important; margin-right: -8px !important }
[page-subtype="home"] ytd-rich-item-renderer[rendered-from-rich-grid][is-in-first-column], ytd-ad-slot-renderer { display: none !important }
[page-subtype="home"] ytd-rich-section-renderer { margin-left: 16px; margin-right: 16px }
[page-subtype="subscriptions"] #content.ytd-rich-item-renderer>.lockup.ytd-rich-item-renderer { margin-left: 4px !important }
#home-container-media { margin: 24px -16px 0 24px !important; padding-right: 24px !important; justify-content: center !important }
@media only screen and (min-width: 392px) { #home-page-skeleton .rich-grid-media-skeleton { flex-basis: 240px !important; min-width: 240px !important; max-width: 320px !important } }
@media only screen and (min-width: 1583px) { #home-page-skeleton .rich-grid-media-skeleton { flex-basis: 304px !important; min-width: 304px !important; max-width: 360px !important; margin: 0 16px 0 0 !important } }
@media only screen and (min-width: 1807px) { #home-page-skeleton .rich-grid-media-skeleton { flex-basis: 360px !important; min-width: 360px !important; max-width: 360px !important; margin: 0 16px 0 0 !important } }
@media only screen and (min-width: 1600px) { #home-container-media { display: flex !important; grid-template-columns: repeat(4, 1fr) !important } }
.ytThumbnailBottomOverlayViewModelBadgeContainerLarge { padding: 0 4px 4px 0 !important }
/* Search page: Revert pre-gigantic thumbnails style */
ytd-two-column-search-results-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] #primary.ytd-two-column-search-results-renderer, ytd-search[has-search-header][has-bigger-thumbs] #header.ytd-search { max-width: 1096px !important }
ytd-channel-renderer[use-bigger-thumbs][bigger-thumb-style=BIG] #avatar-section.ytd-channel-renderer, ytd-channel-renderer[use-bigger-thumbs] #avatar-section.ytd-channel-renderer, ytd-video-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] ytd-thumbnail.ytd-video-renderer, ytd-video-renderer[use-search-ui] ytd-thumbnail.ytd-video-renderer, ytd-playlist-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] ytd-playlist-thumbnail.ytd-playlist-renderer, ytd-playlist-renderer[use-bigger-thumbs] ytd-playlist-thumbnail.ytd-playlist-renderer, ytd-radio-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] ytd-thumbnail.ytd-radio-renderer, ytd-radio-renderer[use-bigger-thumbs] ytd-thumbnail.ytd-radio-renderer, ytd-radio-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] ytd-thumbnail.ytd-radio-renderer, ytd-radio-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] ytd-playlist-thumbnail.ytd-radio-renderer, ytd-movie-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] .thumbnail-container.ytd-movie-renderer, ytd-movie-renderer[use-bigger-thumbs] .thumbnail-container.ytd-movie-renderer, ytd-promoted-video-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] ytd-thumbnail.ytd-promoted-video-renderer, ytd-promoted-sparkles-web-renderer[web-search-layout][use-bigger-thumbs][bigger-thumbs-style=BIG] #thumbnail-container.ytd-promoted-sparkles-web-renderer, ytd-text-image-no-button-layout-renderer[use-bigger-thumbs][bigger-thumbs-style=BIG] #text-image-container.ytd-text-image-no-button-layout-renderer, .yt-lockup-view-model-wiz--horizontal .yt-lockup-view-model-wiz__content-image, .yt-lockup-view-model--horizontal .yt-lockup-view-model__content-image, .ytLockupViewModelHorizontal .ytLockupViewModelContentImage { max-width: 360px !important }
}