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 — 23 Oct 2026, 02:07. Counted over every journal article Crossref holds, counted one by one.
This is the record as it was kept on 23 Oct 2026 — a page of its own you can send as proof. Today's figures →
The seven signals indexes read
Of the 124,702,536 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% | 58,822,186 | 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% | 85,333,945 | 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% | 53,060,929 | 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 |
15.2% | 105,697,870 | 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% | 97,504,913 | 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 |
0.4% | 124,153,845 | 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% | 109,887,875 | 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 23 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% | 15.2% | +0.1 pts |
| Author affiliations | 21.7% | 21.8% | +0.1 pts |
| ROR institution ids | 0.4% | 0.4% | no change |
| 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: 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 16 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.
