The Grammar of Headlines and Subheadings

Headlines Are Not Regular Sentences

Headlines operate under a compressed grammar of their own. They drop articles, use present tense for past events, and follow capitalization rules that would be wrong anywhere else in the piece. When a writer applies body-text rules to a headline, or headline rules to a sentence, the mistake jumps off the page.

The trick is knowing which rules are conventions you can bend and which are hard errors. A headline that omits "the" is normal; a headline that capitalizes "the" in the wrong spot is a mistake. This post separates the two so your headlines look deliberate, not sloppy.

Title Case vs. Sentence Case, Decoded

The Capitalization Mistakes That Signal Carelessness

The errors that make a headline look amateur are small and specific. Capitalizing a short preposition like "about" in title case, or lowercasing a verb like "is," tells a careful reader the writer guessed. The major style guides, AP, Chicago, and the New York Times, largely agree on the core rules, and following any one of them is better than making it up.

The safe approach: in title case, capitalize everything except articles (a, an, the), short coordinating conjunctions (and, but, or), and short prepositions (in, on, at, to, for). Always capitalize the first and last word, no matter what they are. That single rule prevents most of the obvious mistakes.

Headline Conventions That Are Not Errors

• Dropping articles: "Senate Passes Bill" instead of "The Senate Passes the Bill" reads tighter and is standard.
• Using present tense for recent past: "Company Launches Product" is normal even if it happened yesterday.
• Comma instead of "and": "Coffee, Tea Sales Rise" is a recognized headline shorthand.
• Omitting the period: Headlines almost never end with a period, even when they are full statements.
• Colon for subtitles: "Main Idea: The Subtitle" is a clean, accepted structure.

A Grammar Check for Every Headline

1. 1
   Read it as a sentence first

   Before worrying about capitalization, make sure the headline parses. If you added back the missing words, would it form a grammatical sentence? If not, the compression went too far and a reader will stumble.

2. 2
   Apply your capitalization rule to every word

   Go word by word and ask: first or last word, noun, verb, adjective, adverb, or pronoun? Capitalize those. Article, short conjunction, or short preposition? Lowercase. This is tedious for one headline but becomes automatic fast.

3. 3
   Check the subheadings match the system

   Subheadings follow the same rules as headlines but are often treated carelessly. If your headlines are title case, your subheadings should be too. A title-case headline above a sentence-case subheading looks like two different people wrote them.

4. 4
   Test it on mobile length

   Grammar that works at 60 characters can break at 40 when the line wraps awkwardly. Check how the headline renders on a phone screen, since a mid-word wrap or an orphaned article can make even correct capitalization look off.

Breaking the Rules on Purpose

Once you know the conventions, you can break them for effect. A brand that uses all-lowercase headlines everywhere, like some modern tech and fashion sites, is making a deliberate choice that signals a specific tone. That reads as style. The same lowercase treatment applied randomly to one post on an otherwise capitalized blog reads as a typo.

The line between sharp and sloppy is consistency and intent. Break the rule everywhere with a reason, and it looks designed. Break it once by accident, and it looks like you did not proofread. Readers cannot always articulate the difference, but they feel it.

Where Most Writers Still Slip

The persistent trouble spots are verbs like is and are getting lowercased in title case, prepositions of four or more letters like about and through getting lowercase when most guides capitalize them, and the word immediately after a colon. On those last two, check your specific style guide, because AP and Chicago disagree, and either is defensible as long as you are consistent.

For a fast final check, paste the headline into a title-case converter to see the baseline, then adjust to your chosen style. If your headline still feels stiff or robotic after the grammar is right, AI Humanizer Lab's Paraphraser can suggest sharper phrasings that keep the structure clean while making the wording land harder.