Small, focused web tools for working with scholarly identifiers and citations. Each tool is free to use and requires no signup.
Paste any text and instantly find every DOI, PubMed ID, PMCID, arXiv ID, ISBN, ISSN, and NASA ADS bibcode it contains.
Enter a DOI, PubMed ID, arXiv ID, or any scholarly identifier and instantly get a formatted BibTeX entry ready to paste into a .bib file.
Enter any scholarly identifier and download an RIS file you can import into Zotero, Mendeley, EndNote, or any reference manager.
Enter a PMID, PMCID, or DOI and instantly get the other two identifiers. Essential for NIH grant applications and cross-database lookups.
Looking for the main citation formatting tool? Use the Scholar Sidekick resolver to format DOIs, PMIDs, and more into Vancouver, APA, AMA, IEEE, CSE, or any of 10,000+ CSL styles, and export them to RIS, BibTeX, and more. See the API documentation if you want to build on top of Scholar Sidekick, or the MCP server for AI-assistant integrations.