AP Style Title Case: How Capitalization Rules Apply to Logo Lettering
How AP Style handles title case, how it differs from AP headline style, how hyphenated words are treated, and what that means for wordmarks, taglines and editable vector logo files.
Contents
The Short Answer
AP Style has two different capitalization systems, and people often mix them up. For composition titles, such as books, films, songs, shows and works of art, AP uses title case. Principal words are capitalized, as are prepositions and conjunctions of four or more letters. Articles and words shorter than four letters stay lowercase unless they are the first or last word. For news headlines, AP uses sentence case. Only the first word and proper nouns are capitalized.
For logo work, the key point is that AP governs editorial text, not artwork. A wordmark set in all caps or all lowercase is a design choice. AP rules matter when that brand name, tagline or product title appears in running copy, press materials or headlines. They can also guide a mixed-case tagline that is meant to read like a title.
AP Title Case Rules for Composition Titles
- Capitalize principal words: nouns, pronouns, verbs, adjectives and adverbs.
- Capitalize prepositions and conjunctions of four or more letters, such as With, From, Into and About.
- Lowercase articles (a, an, the) and words of fewer than four letters, such as and, but, for, of, on and to.
- Capitalize the first and last word of the title, whatever its length or part of speech.
- In running text, AP places most composition titles in quotation marks. Major reference works and holy books are exceptions. Inside a logo, quotation marks are a design decision, not an AP requirement.
| Word type | Example words | AP title case treatment |
| Article, mid-title | a, an, the | Lowercase |
| Short preposition or conjunction, mid-title | of, in, on, and, but, for | Lowercase |
| Preposition or conjunction of four or more letters | with, from, over, that | Capitalize |
| Short verb or pronoun | is, be, it, he | Capitalize (principal word, not a short function word) |
| First or last word | any | Capitalize |
The four-letter threshold is the main way AP title case differs from some other style guides. Those guides lowercase all prepositions regardless of length. Under AP, a title such as Gone With the Wind capitalizes With. A guide that lowercases every preposition would not.
Title Capitalization vs. AP Headline Style
If a brand announcement, press release or blog post about a logo follows AP, its headline is normally sentence case: New logo puts the company name in lowercase. Title case under AP is reserved for the names of composition titles inside that text. A reader who asks how to capitalize a title in AP Style should first decide which one they mean: a headline or the name of a work.
Hyphenated Words in AP Title Case
The supplied material does not include AP's exact wording on hyphenated compounds in titles, so treat this as a gap to check against the current AP Stylebook. A common approach among editors who follow AP is to capitalize each part of a hyphenated compound that would be capitalized on its own, as in Self-Made or Long-Term. Under that approach, a short article, preposition or conjunction inside the compound stays lowercase, as in Up-to-Date. If a project depends on a precise result, confirm the rule in the Stylebook or with the publication's own style editor rather than relying on general practice.
Applying the Rules to Wordmarks and Taglines
- Wordmarks: The case of a logotype is set by the brand, not by AP. All caps, all lowercase and unusual internal capitals are all valid in artwork.
- Brand names in running text: Editorial style guides, AP included, do not always reproduce a logo's stylized case. All caps in a logo does not mean the name will appear in all caps in an AP-styled article.
- Taglines and campaign titles: If a tagline is meant to read as a title, AP title case gives a consistent, defensible standard. Apply the four-letter rule and capitalize the first and last words.
- Consistency across assets: Decide one capitalization for the tagline and record it in the brand guidelines. Variations between the logo file, website and print materials look like errors.
What Changing Case Means for a Vector Logo File
How easily lettering can move to title case, sentence case or all caps depends on how the text exists in the file. If the text is still live type, changing case may be quick, but only if the original font is installed and licensed for that use. If the lettering has been converted to outlines, each letter is a set of vector paths. Changing case then means redrawing or substituting glyphs and rechecking spacing by hand. Custom-drawn lettering usually has no lowercase or uppercase counterpart unless one was designed.
A file extension alone does not reveal which situation applies. A file labeled as vector may contain live text, outlined paths, an embedded raster image of the lettering, or only a raster preview. Open the file in a vector editor and inspect the actual objects before planning a capitalization change.
Case changes also affect spacing. Uppercase letters often need more open tracking than mixed-case text. Shifting a tagline from all caps to title case can change its width and its alignment with the symbol. Check the lockup at the sizes where it will actually be used.
Permissions Before Editing Lettering
Being able to download a logo file does not grant permission to change it. Recasing a wordmark or tagline modifies trademarked artwork, which normally requires the brand owner's approval. Editing live text also depends on the font license, which may limit modification, embedding or distribution separately from the logo itself. When writing about another company's logo, you can usually apply AP style to its name in your copy. Altering the artwork is a different matter.
Gaps in the Available Evidence
This overview relies on widely documented AP conventions rather than case-specific evidence. No particular logo, file, Stylebook edition or font license was supplied. The hyphenated-compound guidance above reflects common editorial practice, not quoted AP text. Confirm edition-specific details, especially for hyphenation and stylized trade names, in the current AP Stylebook before finalizing published copy or brand guidelines.