Description
Normalize a restricted DOI token.
Bibliographic records connect authors, versions, publication dates and locators through explicit identifiers. Literal comparisons and counts help reconcile those records but do not retrieve publications, authenticate sources or establish the quality or meaning of a citation.
Normalize a restricted DOI token.
When to use this tool
Use Reference DOI Prefix Case Normalization when checking the stated bibliographic record, locator, date or counting convention.
How to use the tool and how it works
- Enter identifier. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read normalized, removedResolver. Inspect removedResolver before interpreting the associated values.
Normalize a restricted DOI token. Remove a leading DOI resolver URL or doi: prefix, require a 10-dot numeric registrant/slash nonwhitespace suffix pattern, lowercase the result; removedResolver tests an original HTTP(S) prefix.1
DOI identifiers have case-insensitive naming conventions. This helper applies full string lowercasing and a restricted syntax check; it does not implement complete identifier equivalence or resolution.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| identifier | Identifier | Required. Text; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| normalized | Full-Unicode lowercase stripped DOI-like token; no complete DOI-equivalence validation, registration lookup or percent decoding. | Required. Text; maximum UTF-16 length 8192. |
| removedResolver | Removed Resolver | Required. Boolean. |
{
"input": {
"identifier": "https://doi.org/10.1234/ABC"
},
"output": {
"normalized": "10.1234/abc",
"removedResolver": true
}
}Limitations and assumptions
- No surrounding whitespace trim, percent decoding or DOI resolution occurs; syntax acceptance does not establish registration or source authenticity.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Inspect the original publications and authoritative metadata, and use complete identifier-aware reference management for scholarly attribution and evidence appraisal.
References
Similar or alternative tools
- Journal Issue Page Prefix Kind
Split a simple page token into alphabetic prefix and digit text.
- Journal Issue Special Supplement Label
Format one volume/issue/supplement label.