Metadata completeness — one score
Any journal by its ISSN, any DOI prefix, any Crossref member: how much of the metadata indexes read is on the record, what is missing, and who fixes it. Free, no account — every figure is Crossref's own.
All of Crossref's journal articles
all of Crossref's journal articles · Crossref works API — journal articles ↗ · one of the per-DOI counts (reference lists) ↗
Read from Crossref just now — 24 Oct 2026, 03:26. Counted over every journal article Crossref holds, counted one by one.
The seven signals indexes read
Of the 124,730,555 journal articles, how many carry each one. The impact numbers sum to 100 and make the score — the weighted share of what is there; a signal Crossref gave no figure for is left out of the score, never counted as 0.
| Signal | Share | Without it | What it means — and who fixes it |
|---|---|---|---|
| Reference lists impact 22 |
52.8% | 58,822,930 | The engine deposits the reference list of each article — this is what feeds Cited-by, OpenAlex and Scholar. Run the Reference Booster / DOI Doctor. The engine deposits it. |
| Abstracts impact 18 |
31.6% | 85,340,646 | No abstract in the record means weaker discovery everywhere. DOI Doctor reads it from the PDF and deposits it. The engine deposits it. |
| Licences impact 16 |
57.5% | 53,072,851 | A licence in the record is what marks the article open access and DOAJ counts it. DOI Doctor deposits the licence your article page states. The engine deposits it. |
| ORCID iDs impact 14 |
15.3% | 105,709,145 | Author ORCIDs tie the work to its authors for ORCID, funders and OpenAlex. The engine deposits them when the article page carries them; otherwise add them in OJS first. Needs the value on the page first. |
| Author affiliations impact 12 |
21.8% | 97,514,348 | A machine-readable affiliation is what gives the institution credit and lets NIRF / NAAC counts find the work. Add affiliations to the article metadata; the engine deposits them. Needs the value on the page first. |
| ROR institution ids impact 10 |
0.5% | 124,119,375 | A ROR id (ror.org) is the machine-readable name of the institution — the strongest institutional-credit signal there is. Add each institution's ROR to the affiliation; the engine deposits it with the affiliation. Needs the value on the page first. |
| Funder data impact 8 |
11.9% | 109,900,092 | Funder ids link the work to the grant that paid for it — read by funders and OpenAlex. Add the funder to the article metadata; the engine deposits it. Needs the value on the page first. |
Every DOI, yes or no — the gap list
There is no list of every journal article in Crossref here — score one journal, prefix or member for its own list.
Before and after
First recorded 9 Oct 2026: 32 (E) → latest 24 Oct 2026: 32 (E)
| Signal | First | Latest | Change |
|---|---|---|---|
| Reference lists | 52.8% | 52.8% | no change |
| Abstracts | 31.4% | 31.6% | +0.1 pts |
| Licences | 57.4% | 57.5% | no change |
| ORCID iDs | 15.2% | 15.3% | +0.1 pts |
| Author affiliations | 21.7% | 21.8% | +0.1 pts |
| ROR institution ids | 0.4% | 0.5% | +0.1 pts |
| Funder data | 11.9% | 11.9% | no change |
Every record kept — one a day, the day's last reading — each a page of its own you can send as proof: 24 Oct 2026 — 32 (E) · 23 Oct 2026 — 32 (E) · 20 Oct 2026 — 32 (E) · 18 Oct 2026 — 32 (E) · 16 Oct 2026 — 32 (E) · 15 Oct 2026 — 32 (E) · 9 Oct 2026 — 32 (E)
What large publishers reach, read on 23 Oct 2026
Each scored exactly as any member is scored here — from its own Crossref member record, by the same seven signals and weights. Names are Crossref's own. The median of the 12 is 41.
All of Crossref's journal articles: 32 — 9 points below the large publishers' median, and the same as all of Crossref.
How the score is made
- Reference lists — impact 22
- Abstracts — impact 18
- Licences — impact 16
- ORCID iDs — impact 14
- Author affiliations — impact 12
- ROR institution ids — impact 10
- Funder data — impact 8
The score is the share of each signal on the record, weighted by its impact (the impacts sum to 100). A signal Crossref gives no figure for is left out and the rest are weighed as before — never counted as 0. Grade A from 85, B from 70, C from 55, D from 40, otherwise E. A journal is read off Crossref's journal record (its current and backfile DOIs, weighted by how many each holds); a prefix and all of Crossref by counting every DOI with Crossref's own has-… filters; a member off its member record, as What Crossref holds about you reads it. The members door's engagement dashboard prints the same score from the same functions.
Sources: Crossref REST API · Crossref participation reports · ROR · ORCID · doi.org. This page reads only what is public; it says what a database sees when it looks the record up — not whether a journal is well run.
