PRISM Metadata on new websites

1. PRISM Metadata did not appear on any new site in the last 30 days.^[1]

The line is the 7-day average share of new sites that use PRISM Metadata, day by day for the last 90 days and weekly before that (left of the dashed line). The shaded areas were measured against a different set of sites, so the line can step there without PRISM Metadata itself changing.^[2][3]

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	Substack	0.1%	49.6%
2	–	Open Journal Systems	<0.1%	11.7%
3	▲2	Facebook Instant Articles	<0.1%	4.6%
4	▼1	FeedBurner	<0.1%	4.2%
5	▼2	Heyzine	<0.1%	2.6%
…
78	▼15	PRISM Metadata	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Publishing tool. Among September launches it ranked #73 in Publishing, down from #58 in August. All 143 in Publishing

1 of the 3 sites using PRISM Metadata are product launches we list individually. The other 2 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts.

Site	Found	Also detected
Nature nature.com	Apr 3

The StackScope API serves all 3 sites using PRISM Metadata, filterable and exportable, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well, so the share is measured against a much larger set of sites. For one continuous measure, view launch platforms only.
3. Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.