# Headline Capitalization > A free online tool for correctly capitalizing titles and headlines ## About Headline Capitalization is a free headline checker that correctly capitalizes titles for all your writing. It supports four major capitalization styles: - **AP Style** (Associated Press): Capitalizes words with four or more letters - **APA Style**: Capitalizes words with four or more letters - **Chicago Manual of Style**: Does not capitalize words based on length - **MLA Style**: Capitalizes major words and those with four or more letters ## How It Works Enter your headline text into the input field, select your preferred capitalization style, and the tool instantly converts your text to the correct title case format in real-time as you type. All processing happens in your browser - no data is sent to any server. ## Pages - Homepage / Tool: https://headlinecapitalization.com/ - AP Style Title Case Rules: https://headlinecapitalization.com/rules/ap-style-title-case - Chicago Style Title Case Rules: https://headlinecapitalization.com/rules/chicago-style-title-case - APA Style Title Case Rules: https://headlinecapitalization.com/rules/apa-style-title-case - MLA Style Title Case Rules: https://headlinecapitalization.com/rules/mla-style-title-case - Title Case Styles Compared (AP vs Chicago vs APA vs MLA): https://headlinecapitalization.com/rules/title-case-styles-compared - Email Subject Line Capitalization Guide: https://headlinecapitalization.com/guides/email-subject-line-capitalization - Sentence Case vs Title Case Guide: https://headlinecapitalization.com/guides/sentence-case-vs-title-case - Social Media Capitalization Guide: https://headlinecapitalization.com/guides/social-media-capitalization - Common Title Case Mistakes Guide: https://headlinecapitalization.com/guides/title-case-mistakes - Headline Capitalization for SEO Guide: https://headlinecapitalization.com/guides/headline-capitalization-for-seo - Headline Capitalization FAQ: https://headlinecapitalization.com/guides/headline-capitalization-faq - Blog Post Title Capitalization Guide: https://headlinecapitalization.com/guides/blog-post-title-capitalization - Academic Paper Title Capitalization Guide: https://headlinecapitalization.com/guides/academic-paper-title-capitalization - Book Title Capitalization Guide: https://headlinecapitalization.com/guides/book-title-capitalization - Essay Title Capitalization Guide: https://headlinecapitalization.com/guides/essay-title-capitalization - Song Title Capitalization Guide: https://headlinecapitalization.com/guides/song-title-capitalization - Movie Title Capitalization Guide: https://headlinecapitalization.com/guides/movie-title-capitalization - Podcast Title Capitalization Guide: https://headlinecapitalization.com/guides/podcast-title-capitalization - Presentation Title Capitalization Guide: https://headlinecapitalization.com/guides/presentation-title-capitalization - YouTube Video Title Capitalization Guide: https://headlinecapitalization.com/guides/youtube-video-title-capitalization - Instagram Caption Capitalization Guide: https://headlinecapitalization.com/guides/instagram-caption-capitalization - TikTok Caption Capitalization Guide: https://headlinecapitalization.com/guides/tiktok-caption-capitalization - LinkedIn Post Capitalization Guide: https://headlinecapitalization.com/guides/linkedin-post-capitalization - Twitter/X Post Capitalization Guide: https://headlinecapitalization.com/guides/twitter-x-post-capitalization - Newsletter Subject Line Capitalization Guide: https://headlinecapitalization.com/guides/newsletter-subject-line-capitalization - Resume Capitalization Guide: https://headlinecapitalization.com/guides/resume-capitalization - Job Title Capitalization Guide: https://headlinecapitalization.com/guides/job-title-capitalization - Privacy Policy: https://headlinecapitalization.com/privacy-policy - Terms of Service: https://headlinecapitalization.com/terms ## Style Guide Articles ### AP Style Title Case A complete guide to Associated Press title case rules, covering which words to capitalize, common exceptions, and real-world examples of AP headline formatting. ### Chicago Style Title Case A comprehensive guide to Chicago Manual of Style title case rules, explaining the capitalize-everything approach, how it differs from AP style, and practical examples. ### APA Style Title Case A complete guide to APA 7th edition title case rules for academic papers and research. Covers the four-letter preposition rule, when to use title case vs. sentence case, heading levels, hyphenated compounds, and common mistakes. ### MLA Style Title Case A complete guide to MLA title case rules for essays, research papers, and works cited entries. Covers MLA's approach of lowercasing all prepositions regardless of length, the first and last word rule, foreign language titles, hyphenated compounds, subtitles, and common mistakes. ### Title Case Styles Compared A side-by-side comparison of AP, Chicago, APA, and MLA title case rules. Shows exactly where each style differs on prepositions, conjunctions, hyphenated words, and words after colons. Includes the same headline formatted in all four styles with differences highlighted, plus a quick reference table. ## Practical Guides ### Email Subject Line Capitalization A practical guide to capitalizing email subject lines. Covers the three main approaches (title case, sentence case, lowercase), when to use each one, professional vs. marketing email best practices, common mistakes to avoid, and a decision framework for choosing the right style. ### Sentence Case vs Title Case A comprehensive guide explaining the difference between sentence case and title case. Covers when to use each style, side-by-side examples, what major style guides recommend, common mistakes in both formats, and a decision framework for choosing the right capitalization style for your writing context. ### Social Media Capitalization A platform-by-platform guide to capitalizing social media content. Covers LinkedIn, Instagram, X (Twitter), Facebook, and TikTok with specific recommendations for posts, captions, hashtags, bios, carousel slides, ads, and video text. Includes CamelCase hashtag accessibility guidance and a quick reference chart. ### Common Title Case Mistakes A guide to the 15 most common title case errors writers make. Covers lowercasing short verbs, forgetting the last word rule, handling words after colons, hyphenated words, long prepositions, "to" in infinitives, subordinating conjunctions, phrasal verb particles, articles, brand names, "as," "between"/"yet"/"so," mixing style guides, scientific terms, and not using a tool. Includes wrong/right examples and a quick reference cheat sheet. ### Headline Capitalization for SEO A guide to how headline capitalization affects search engine optimization. Covers whether Google cares about capitalization, how it impacts click-through rates, title case vs sentence case for SEO, when Google rewrites your title tags, why ALL CAPS hurts rankings, best practices for SEO title capitalization, character limits, consistency guidelines, and common SEO title mistakes. Includes a practical SEO title checklist. ### Headline Capitalization FAQ Answers to 18 frequently asked questions about headline capitalization and title case. Covers what headline capitalization is, which words to capitalize, specific words like "the," "is," and "to," style guide differences between AP and Chicago, tricky cases like hyphenated words, colons, brand names, and numbers, SEO implications, and how to verify correct capitalization. Includes FAQPage schema for search engine rich snippets. ### Blog Post Title Capitalization A guide to capitalizing blog post titles correctly. Covers rules for WordPress, Medium, Substack, and other platforms. Includes AP, APA, Chicago, and MLA examples, SEO considerations for blog titles, and common mistakes bloggers make. ### Academic Paper Title Capitalization A guide to capitalizing academic paper titles for APA, MLA, and Chicago styles. Covers research papers, dissertations, reference list entries, heading levels, and the difference between title case and sentence case in academic writing. ### Book Title Capitalization A guide to capitalizing book titles across AP, APA, MLA, and Chicago styles. Covers subtitles, series titles, reference list formatting, and 20 real-world examples showing correct capitalization for each style guide. ### Essay Title Capitalization A guide to capitalizing essay titles for class essays, college applications, and literary analysis. Covers APA, MLA, Chicago, and AP rules with 15 examples and common student mistakes. ### Song Title Capitalization A guide to capitalizing song titles correctly using AP, APA, Chicago, and MLA style. Covers albums vs singles formatting, featured artists, parenthetical subtitles, stylized titles, hyphenated words, streaming platform conventions, and a quick reference checklist. ### Movie Title Capitalization A guide to capitalizing movie titles correctly across AP, APA, MLA, and Chicago styles. Covers subtitles, sequels, franchise titles, foreign films, and formatting for reference lists and citations. ### Podcast Title Capitalization A guide to capitalizing podcast titles for show names and episode titles across AP, APA, MLA, and Chicago styles. Covers formatting for directories, citations, and common podcast naming conventions. ### Presentation Title Capitalization A guide to capitalizing presentation titles, slide headings, and conference talk names in AP, APA, Chicago, and MLA style. Includes PowerPoint and Google Slides tips, 15 common mistakes, and a quick reference checklist. ### YouTube Video Title Capitalization A guide to capitalizing YouTube video titles for maximum click-through rate. Covers AP, APA, MLA, and Chicago style rules, character limits and truncation on desktop vs mobile, thumbnail text conventions, YouTube Shorts titles, the ALL CAPS question, and 15 common creator mistakes with wrong/right examples. ### TikTok Caption Capitalization A guide to capitalizing TikTok captions, video text overlays, hashtags, and bios. Covers sentence case vs title case for short-form video, text-on-screen formatting, hashtag CamelCase, bio optimization, brand vs creator accounts, Duets and Stitches, TikTok Shop titles, and common mistakes with formatting tips for maximum engagement. ### LinkedIn Post Capitalization A guide to capitalizing LinkedIn posts, article titles, newsletter subject lines, profile headlines, job titles, About sections, company pages, and hashtags. Covers sentence case for feed posts, title case for articles and profiles, CamelCase hashtags, 10 common LinkedIn capitalization mistakes, and style recommendations by professional role type. ### Twitter/X Post Capitalization A guide to capitalizing tweets, thread openers, quote tweets, replies, display names, bios, and hashtags on Twitter/X. Covers sentence case for regular tweets, title case for thread openers and display names, CamelCase hashtags, brand account standards, the all-lowercase trend, link preview formatting, platform comparisons, and 10 common Twitter/X capitalization mistakes. ### Newsletter Subject Line Capitalization A guide to capitalizing newsletter subject lines for higher open rates. Covers title case, sentence case, and all-lowercase strategies with examples from top newsletters like Morning Brew, Stratechery, and Lenny's Newsletter. Includes capitalization rules by newsletter type, preheader text formatting, A/B testing methodology, 8 common newsletter subject line mistakes, and a quick reference chart. ### Resume Capitalization A guide to capitalizing every section of a resume correctly. Covers section headers (title case vs all caps), job titles as headings vs mid-sentence, company name capitalization, formal vs informal degree names, certifications, bullet points, skills lists, city/state/country, and the resume summary. Includes a 10-mistake table of common resume capitalization errors, a quick reference chart for every resume element, and FAQ covering job title capitalization, bachelor's degree formatting, and soft skills in skills sections.