Title Case vs Sentence Case: The Complete Style Guide

Title Case: Capitalise most words — "How to Compress Images Without Losing Quality"

Sentence case: First word + proper nouns only — "How to compress images without losing quality"

Style Guide Rules

AP Style (journalism): Title case for headlines. Skip articles, short prepositions, conjunctions.

APA Style (academic): Sentence case for article titles.

Web content: Sentence case increasingly preferred — more readable, less error-prone.

Leading tech companies — Linear, Vercel, Stripe, Notion — use sentence case for product copy. It:

Reads more naturally

Has no judgment calls about which prepositions to capitalise

Looks cleaner in UI elements

Use title case for: page <title> tags (appear in Google SERPs), navigation labels, formal document headings.

Overcapitalising job titles: "The Sales Manager reported…" (wrong)

Random caps for emphasis: "Our Product is Best" (wrong — use bold)

All-caps: AVOID except for acronyms

Convert text instantly with our Case Converter — 9 conversion formats including camelCase and snake_case.