--- title: "JSON-LD structured data adoption grew from 34% to 41% of pages" url: https://surfil.com/blog/structured-data-adoption-web-almanac section: studies language: en published: 2026-08-11T00:00:00.000Z modified: 2026-08-11T00:00:00.000Z author: Adam Hafez topics: ["Structured data", "Technical SEO"] --- # JSON-LD structured data adoption grew from 34% to 41% of pages ## The short answer The Web Almanac, HTTP Archive's annual analysis of millions of crawled pages, found that JSON-LD structured data usage grew from 34% of pages in 2022 to 41% in 2024. RDFa (66%) and Open Graph (64%) remained the most widely used formats that year, ahead of JSON-LD, Twitter meta tags (45%) and Microdata (26%). ## Key takeaways - The Web Almanac's 2024 structured-data chapter found JSON-LD present on 41% of crawled pages, up from 34% in 2022. - RDFa (66%) and Open Graph (64%) were still the most common structured-data formats on the web in 2024, ahead of JSON-LD. - Twitter meta tags reached 45% of pages, Microdata 26%, and Facebook-specific meta tags 7%, per the same chapter. - The Web Almanac crawls millions of URLs monthly through HTTP Archive's own infrastructure, not a random sample of the entire web. - A page can carry more than one structured-data format at once, so these adoption rates are not mutually exclusive shares. HTTP Archive's Web Almanac, an annual analysis built on its own crawl of millions of live pages, tracked structured-data format usage across the web and found JSON-LD growing from 34% of pages in 2022 to 41% in 2024. That places JSON-LD, the format Google recommends, behind two older and broader formats in absolute share: RDFa at 66% of pages and Open Graph at 64%. Twitter meta tags sat at 45%, Microdata at 26%, and Facebook-specific meta tags at 7%. The chapter, written by Andrea Volpini, treats these as adoption rates for each format independently, not as a single pie that sums to 100%, since a page commonly ships more than one of them at once. ## What the Almanac measured HTTP Archive runs its crawl through its own WebPageTest infrastructure rather than sampling a handful of sites by hand. Its 2025 methodology page states the July 2025 crawl alone covered 16,213,084 websites, with 15,426,398 mobile and 12,155,374 desktop websites, each rendered in a real Chrome environment and logged into BigQuery for public querying. The 2024 structured-data chapter draws on the same monthly dataset and compares 2022 with 2024. The chapter does not spell out whether the crawl setup stayed identical across those two years, so the 34%-to-41% JSON-LD change is the Almanac's own comparison, not one we re-ran. ## What the numbers represent The crawl set is built from the Chrome UX Report's list of sites visited by Chrome users, and the methodology page warns that testing a site's home page is not necessarily representative of the whole site. It is not a uniform random sample of every page that exists. The chapter also measures format presence, not correctness or completeness: a page counted as having JSON-LD may carry a single minimal Organization block rather than the rich markup a publisher might assume when they read "41%." And because formats overlap, a rise in JSON-LD adoption does not mean RDFa or Open Graph declined by a matching amount; each format's share moves on its own. ## Why we care **JSON-LD's growth is real, but it is still the newer format catching up, not the leader.** Two-thirds of crawled pages already carry RDFa, and Open Graph, which the chapter says is often encoded as RDFa, sits at 64%, so a 41% JSON-LD share undercounts how much of a publisher's actual competitive set already ships some form of structured markup. **The 34% to 41% figure spans two Almanac editions.** The chapter reports the change itself and we did not re-run it, so read it as the Almanac's own comparison and check the chapter if the exact crawl setup matters to you. **Presence is not quality.** A rising JSON-LD percentage says more pages carry the format at all; it says nothing about whether that markup validates, matches on-page content, or covers the entity types that actually earn rich results. ## Sources 1. [2024 Web Almanac: Structured Data](https://almanac.httparchive.org/en/2024/structured-data) - HTTP Archive (primary) 2. [2025 Web Almanac: Methodology](https://almanac.httparchive.org/en/2025/methodology) - HTTP Archive