#testcards
Live, measured metrics for the hashtag #testcards from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #testcards
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mas.to (Mastodon public tags API) · fetched 2026-10-14 00:36 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mas.to (Mastodon public search API) · fetched 2026-10-14 00:36 UTCLive pulse
measured · mas.to (Mastodon tag timeline) · fetched 2026-10-14 00:36 UTCEverything below is measured over the latest 8 public posts (spanning ~31567 hours).
Posting hours (UTC)
Languages: English (8)
Avg boosts / post: 1.6
Top of the latest posts
My interests, hashtagged: #Aliens #ArtGalleries #Backgammon #Burlesque #ClassicRock #Coffee #FreeSpirits #Gemini #GlamRock #Glasgow #Halloween #Horror #Lifestreaming #ModernHistory #Moon #Naturism #NYGiants #Nostalgia #Pagan #Photography #P
Thinking about redecorating. 🎨 Photo by https://www.peterstewartphotography.com. #TV #Retro #TestCard #TestCards #Television #OldTelevision #PaintJob #Art #Photography
Remaking BBC test cards to teach you video processing https://www.youtube.com/watch?v=U_6HxPkrgcg #HackerNews #videoProcessing #BBC #remaking #testCards #techEducation #YouTube
What “testcards” means
WikipediaA test card, also known as a test pattern or start-up/closedown test, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast, and may be accompanied by a bleep sound.
“Test card” on Wikipedia (CC BY-SA) →#testcards across platforms
every network with a public tag surfaceFollow #testcards straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/testcards