DOI Link Generator

How DOI normalization works, and what it cannot prove

A DOI has a prefix that starts with 10. followed by digits, a slash and a registrant-defined suffix. Lynara accepts a bare DOI, a doi: label and older dx.doi.org links, then normalizes the result to the https://doi.org/ form.

Worked example: the input “DOI: 10.1037/0003-066X.59.1.29.” loses its label and trailing period and becomes https://doi.org/10.1037/0003-066X.59.1.29. In extraction mode, the same DOI pasted with different letter case is returned once.

Normalization checks the identifier format, not the bibliographic match. A DOI copied from a PDF can include line-break artifacts or surrounding punctuation, so open the normalized link and confirm that the title and source are the work you intended to cite.

Crossref recommends the https://doi.org/ display form. Citation styles can still differ in how they present DOI information, so follow the style guide required by the assignment.

Sources: DOI Foundation, DOI Handbook; Crossref, DOI display guidelines.

Privacy: bibliography and DOI utility inputs are processed locally in your browser and are not sent to a citation-processing backend.

Formula

canonical DOI URL = https://doi.org/ + normalized DOI; extraction finds DOI-shaped identifiers then de-duplicates normalized values

Example

doi: 10.1000/xyz123 becomes https://doi.org/10.1000/xyz123; extraction can collect several DOI strings from a pasted bibliography.

References for this method

• DOI Foundation — What is a DOI?
• DOI Foundation — DOI Handbook
• International ISBN Agency — ISBN Users' Manual
• ISSN International Centre — ISSN Manual
• ORCID — Structure of the ORCID Identifier
• arXiv — Understanding the arXiv identifier

Useful for

• Cleaning DOI links
• Extracting DOI identifiers from references
• Preparing DOI fields before citation generation

Supporting guides

• How to Normalize a DOI Link
• DOI vs ISBN vs ISSN vs ORCID vs arXiv IDs