{
 "measured_utc": "2026-10-10T04:10:53Z to 04:13:31Z",
 "method": "Chrome-based browser pane on one Mac, signed out, device pixel ratio 2. For each page we read getBoundingClientRect() of every thumbnail container (ytd-thumbnail, yt-thumbnail-view-model, ytm-thumbnail-cover, .media-item-thumbnail-container) and of the duration badge inside it. Sizes are CSS pixels. Mobile rows are m.youtube.com with an emulated Android Chrome user agent and viewport, not the YouTube app. Search query: how to make a youtube thumbnail. Watch page: /watch?v=WzDmoTydaEk. Channel: @YouTubeCreators/videos.",
 "rows": [
  {"surface": "Home grid", "client": "desktop web", "viewport": "1280x800", "w": 371.0, "h": 208.7, "n": 3},
  {"surface": "Home grid", "client": "desktop web", "viewport": "1920x1080", "w": 528.3, "h": 297.2, "n": 3},
  {"surface": "Search results", "client": "desktop web", "viewport": "1280x800", "w": 500.0, "h": 280.5, "n": 20},
  {"surface": "Search results", "client": "desktop web", "viewport": "1920x1080", "w": 500.0, "h": 280.5, "n": 1},
  {"surface": "Channel Videos tab", "client": "desktop web", "viewport": "1280x800", "w": 347.3, "h": 195.4, "n": 3},
  {"surface": "Channel Videos tab", "client": "desktop web", "viewport": "1920x1080", "w": 420.0, "h": 236.2, "n": 3},
  {"surface": "Watch page sidebar", "client": "desktop web", "viewport": "1280x800", "w": 214.8, "h": 120.8, "n": 4},
  {"surface": "Watch page sidebar", "client": "desktop web", "viewport": "1920x1080", "w": 324.8, "h": 182.7, "n": 3},
  {"surface": "Search results", "client": "mobile web", "viewport": "375x812", "w": 375.0, "h": 210.4, "n": 4},
  {"surface": "Search results", "client": "mobile web", "viewport": "412x915", "w": 412.0, "h": 231.3, "n": 4},
  {"surface": "Home feed", "client": "mobile web", "viewport": "375x812", "w": 375.0, "h": 210.9, "n": 2},
  {"surface": "Watch page, below the player", "client": "mobile web", "viewport": "375x812", "w": 375.0, "h": 223.9, "n": 4}
 ],
 "badges": [
  {"where": "desktop search 1280x800", "style": "inset", "h": 20, "w_min": 35.6, "w_max": 42.5, "right": 8, "bottom": 8, "font_px": 12},
  {"where": "mobile web 375x812 and 412x915", "style": "inset", "h": 20, "w_min": 31.6, "w_max": 38.4, "right": 8, "bottom": 8, "font_px": null},
  {"where": "desktop watch sidebar 1280x800", "style": "corner", "h": 24, "w_min": 39.6, "w_max": 46.5, "right": 0, "bottom": 0, "font_px": 12},
  {"where": "desktop home, channel and watch sidebar 1920x1080", "style": "corner", "h": 28, "w_min": 43.6, "w_max": 60.4, "right": 0, "bottom": 0, "font_px": 12}
 ],
 "not_measured": ["YouTube phone and TV apps", "signed-in layouts", "mobile channel page (did not load in the emulated session)", "tablet", "browser zoom other than 100%"],
 "other_observed": {"Shorts shelf, desktop search 1280x800": "216.2x324.3", "Shorts shelf, desktop search 1920x1080": "237.2x355.8", "Shorts shelf, mobile web home 375x812": "167.5x251.3", "Home feed second size, mobile web 375x812": "351x198.4 (n=2, no badge found)"}
}