BibTeX Key Generator
Generate clean, consistent BibTeX citation keys — like smith2024quantum — from an author, year, and title. Accents and punctuation are stripped automatically, and batch mode disambiguates colliding keys with a/b/c suffixes. Free, no sign-up, runs entirely in your browser.
Key format
Casing
Generate a single key
Fill in at least an author or a year to see the generated key.
Batch mode — one reference per line
Paste formatted references (APA, Harvard, or similar) — one per line. The author surname, year, and first title word are extracted on a best-effort basis, and colliding keys get a/b/c suffixes.
What makes a good citation key?
- Predictable — a fixed scheme like author + year + first title word means you can often type \cite keys from memory without opening the .bib file.
- ASCII-only— strip accents and punctuation (Müller → muller, O'Brien → obrien). Non-ASCII keys break some BibTeX tools and are painful to type.
- Unique and stable — never rename a key after you start citing it. When an author has two papers in one year, add a/b/c suffixes rather than inventing a new scheme.
- Short but meaningful — smith2024quantum beats both smith2024 (collides easily) and a full title slug (tedious to type).
- Consistently cased — pick all-lowercase or CamelCase once and stick to it; BibTeX keys are case-sensitive, so Smith2024 and smith2024 are different keys.
Frequently Asked Questions
- What is a BibTeX citation key?
- The citation key is the identifier right after the entry type in a .bib file — @article{smith2024quantum, ...} — and the handle you use in LaTeX with \cite{smith2024quantum}. It must be unique within your bibliography and should be stable, so a predictable scheme like author + year + first title word is the norm.
- What is the best BibTeX key format?
- The most common convention is first author's surname + year + first significant title word, all lowercase: smith2024quantum. It is readable, sorts naturally, and rarely collides. author + year (smith2024) is shorter but collides as soon as an author publishes twice in a year, which is why tools add a/b/c suffixes.
- How are accents and special characters handled?
- Accented letters are transliterated to plain ASCII (Müller becomes muller, García becomes garcia) and punctuation like hyphens and apostrophes is stripped (O'Brien becomes obrien). BibTeX keys are safest when they contain only ASCII letters and digits — some BibTeX tools break on anything else.
- What happens when two references produce the same key?
- In batch mode the generator detects colliding keys and appends lowercase letters in order — smith2024a, smith2024b, smith2024c — which is the standard BibTeX and reference-manager convention for disambiguating multiple works by the same author in the same year.
- Can I paste a whole formatted reference instead of typing fields?
- Yes. Batch mode accepts one formatted reference per line (APA, Harvard, or similar) and extracts the first author's surname, the year, and the first significant title word on a best-effort basis. Always glance over the generated keys — parsing free-form references is heuristic, not exact.
- Is the BibTeX key generator free?
- Yes. It is completely free with no sign-up and no limits, and it runs entirely in your browser — nothing you type is uploaded to a server.