JSON Schema VS RDF
As of 30 October 2026, RDF is named by 160 companies and JSON Schema by 127; JSON Schema skews to companies under 200 people (34% vs 37%), RDF to companies over 1,000 (40% vs 35%).
As of 30 October 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: JSON Schema's script and mail records show on hundreds of thousands of small sites, RDF rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- JSON Schema: 2–200 employees
- 34%
- RDF: 2–200 employees
- 37%
- JSON Schema: 1,000+ employees
- 35%
- RDF: 1,000+ employees
- 40%
- Postings per company, 90 days
- 1.9 · 3.0
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | JSON Schema | share | RDF | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 5 | 4% | – | – | outside top 12 |
| 2-10 employees | 6 | 5% | 9 | 6% | even |
| 11-50 employees | 19 | 15% | 24 | 15% | even |
| 51-200 employees | 18 | 14% | 26 | 16% | RDF |
| 201-500 employees | 20 | 16% | 25 | 16% | even |
| 501-1000 employees | 15 | 12% | 12 | 8% | JSON Schema |
| 1001-5000 employees | 15 | 12% | 26 | 16% | RDF |
| 5001-10000 employees | 8 | 6% | 8 | 5% | even |
| 10,001+ employees | 21 | 17% | 30 | 19% | RDF |
| Segment | JSON Schema | share | RDF | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 68 | 54% | 83 | 52% | even |
| Business & finance services | 23 | 18% | 24 | 15% | JSON Schema |
| Manufacturing & industry | 12 | 9% | 20 | 13% | RDF |
| Public, community & associations | 5 | 4% | 12 | 8% | RDF |
| Media & content | 5 | 4% | 5 | 3% | even |
| Health care | 3 | 2% | 1 | 1% | even |
| Utilities & infrastructure | 3 | 2% | 3 | 2% | even |
| Automotive | 2 | 2% | 1 | 1% | even |
| Consumer services & leisure | 2 | 2% | 4 | 3% | even |
| Transport, logistics & rental | 2 | 2% | 1 | 1% | even |
| Commerce & trade | 1 | 1% | 4 | 3% | even |
| Hospitality & travel | 1 | 1% | – | – | outside top 12 |
| Property & construction | – | – | 2 | 1% | outside top 12 |
| Segment | JSON Schema | share | RDF | share | Leans |
|---|---|---|---|---|---|
| United States | 90 | 71% | 88 | 55% | JSON Schema |
| United Kingdom | 12 | 9% | 13 | 8% | even |
| Australia | 4 | 3% | 2 | 1% | even |
| Canada | 4 | 3% | 5 | 3% | even |
| Brazil | 3 | 2% | – | – | outside top 12 |
| India | 2 | 2% | 4 | 3% | even |
| Mexico | 2 | 2% | – | – | outside top 12 |
| Singapore | 2 | 2% | 3 | 2% | even |
| Austria | 1 | 1% | 2 | 1% | even |
| Germany | 1 | 1% | 15 | 9% | RDF |
| Denmark | 1 | 1% | – | – | outside top 12 |
| France | 1 | 1% | 5 | 3% | RDF |
| Belgium | – | – | 3 | 2% | outside top 12 |
| Poland | – | – | 3 | 2% | outside top 12 |
| Spain | – | – | 2 | 1% | outside top 12 |
| Segment | JSON Schema | share | RDF | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 129 | 42% | 73 | 12% | JSON Schema |
| Data & AI | 88 | 28% | 309 | 53% | RDF |
| IT operations & business systems | 20 | 6% | 24 | 4% | JSON Schema |
| Legal, compliance & risk | 4 | 1% | – | – | outside top 12 |
| Engineering (non-software) | 3 | 1% | 3 | 1% | even |
| Product, program & project management | 3 | 1% | 15 | 3% | even |
| Design & UX | 2 | 1% | – | – | outside top 12 |
| Sales | 2 | 1% | 2 | 0% | even |
| Administration & office | 1 | 0% | – | – | outside top 12 |
| Arts media and entertainment | 1 | 0% | – | – | outside top 12 |
| Marketing & communications | 1 | 0% | – | – | outside top 12 |
| Real estate and property | 1 | 0% | – | – | outside top 12 |
| Research and science | – | – | 8 | 1% | outside top 12 |
| Manufacturing and production | – | – | 7 | 1% | outside top 12 |
| Logistics warehouse and transport | – | – | 4 | 1% | outside top 12 |
| Education & training | – | – | 2 | 0% | outside top 12 |
| Healthcare clinical | – | – | 2 | 0% | outside top 12 |
| Retail & store operations | – | – | 2 | 0% | outside top 12 |
The companies behind each column
Companies using JSON Schema →
Companies using RDF →
api specs data formats ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
RDF is named by 160 companies in job postings and JSON Schema by 127; 0 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/json-schema-vs-rdf)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
JSON Schema vs RDF: questions
Which is more used, JSON Schema or RDF?
By companies naming it in their own job postings, RDF (160) over JSON Schema (127). By website-and-DNS footprint, RDF (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses JSON Schema?
34% of JSON Schema companies have 2 to 200 employees, against 37% for RDF. 35% of JSON Schema companies have over 1,000 employees, against 40% for RDF.
Do companies run both?
0 companies name both in their postings, usually JSON Schema in marketing and RDF in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
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