The Locolory toolkit / Writing & Editorial
Convert titles and headlines to practical AP, Chicago, APA, and sentence-case rules automatically.
What is title case? Title case capitalizes the first and last words plus major words while lowercasing selected articles, conjunctions, and prepositions according to an editorial style.
Formatting runs locally with no server upload. Automated casing is an editorial aid; review grammatical context, proper nouns and house style.
Formatted headline
Building a Privacy-First API for Creators and Small Businesses
Chicago’s 18th edition capitalizes prepositions of five or more letters. AP and APA generally capitalize words of four or more letters, while articles and short coordinating conjunctions remain lowercase except at boundaries.
Rules for hyphenated compounds, infinitives, phrasal verbs and words with multiple grammatical roles require context.
Sentence case capitalizes the opening word and words after terminal punctuation while lowering other ordinary tokens. Existing all-uppercase acronyms such as API, SEO and NASA remain intact.
Brand spellings such as iPhone, eBay or npm cannot be reconstructed reliably from lowercase input and should be corrected manually.
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They differ in which short function words remain lowercase and how word length affects prepositions and conjunctions. Current Chicago 18 capitalizes prepositions of five or more letters; AP and APA generally capitalize major words of four or more letters, with additional contextual rules.
Yes. Tokens already written in all capitals are preserved. Mixed-case brand names and proper nouns may still need manual review because capitalization alone does not reveal their intended spelling.
No. Words such as as, than, up and out can change grammatical role by context, and style manuals include exceptions for compounds, scientific names, proper nouns and publication-specific house style.