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AP · Chicago · All Words

Convert to Title Case by style guide

AP and Chicago styles correctly lowercase articles, conjunctions, and short prepositions — first and last words always capitalized.

Title Case Workspace
Input size
43 B
9 words
Output size
43 B
Title Cased
Style
AP
rule-based
Stop words
18
kept lower
Style
input · text
output · Title Case
The Quick Brown Fox Jumps Over the Lazy Dog
Quick Start

How to Title Case correctly

Title Case isn't just capitalizing every word. Style guides (AP, Chicago) keep articles, conjunctions, and short prepositions lowercase — but always capitalize the first and last words.

  1. 01

    Paste your title

    Headlines, book titles, headings.

    Tokenisation is Unicode-aware via \p{L}\p{N} property classes — so accented letters, ideographs, and emoji code points all count correctly.

    titleUTF-8Unicodecode pointslive
    input · textraw · UTF-8
    the quick brown fox
    loaded · UTF-8UTF-8 · ready
  2. 02

    Pick a style

    AP (newsroom, blogs), Chicago (books), or All Words (capitalize everything).

    Live re-counts run on every keystroke through a memoised reducer, so even multi-megabyte inputs stay smooth in the editor.

    APChicagolivememoisedoptions
    style · optionsAP · live
    The Quick Brown Fox
    options applied · livelive
  3. 03

    Stop words

    AP/Chicago keep small connector words (a, an, the, and, in) lowercase — except first/last position.

    Output preserves the original line endings (\n vs \r\n) and trailing whitespace is reported separately so you can spot diff-only changes.

    stop wordsline endingswhitespacediff-cleanreproducible
    rules · countedapplied · ready
    Quick Brown Fox in Forest
    counted · livecounted
  4. 04

    Copy or download

    One click.

    Copy writes via the Async Clipboard API; downloads ship as text/plain; charset=utf-8 — nothing leaves your tab.

    copyclipboardtext/plainblobclient-side
    export · copiedready · done
    ✓ Copied
    shipped · ready to shipsuccess
Pro tips

Text-processing fundamentals worth knowing

Tokenise with Unicode classes

Use \p{L}\p{N} with the u flag so accents, ideographs, and emoji count properly.

Normalise line endings

Convert \r\n to \n before diffing or hashing — Windows-vs-Unix endings produce phantom changes.

Mind invisible characters

Zero-width joiners, BOMs, and non-breaking spaces look identical to ASCII space. Strip them before comparison or storage.

Stream don’t slurp

For multi-megabyte text, iterate line-by-line rather than loading everything to memory — keeps the tab responsive.

Choose collation deliberately

Default JS sort is code-point order, not human alphabetical. Use Intl.Collator for locale-aware sorting.

Re-run after normalisation

NFC vs NFD changes byte length but not visible glyphs. String.prototype.normalize() before counts and comparisons.

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Use Cases

When to Title Case

Headlines, headings, titles — anywhere editorial style matters.

Blog headlines

AP style for blog headlines and SEO. Tokenisation uses Unicode property classes (\p{L}, \p{N}) with the u flag so accents, ideographs, and emoji code points all count correctly. Surrogate-pair-aware counts mean 🚀 weighs 1, not 2.

Unicode-correct

Book titles

Chicago style is standard for books. Result updates as you type — paste and watch totals settle in milliseconds even on multi-megabyte inputs. Heavy work runs through a memoised reducer so the editor never janks.

diff-clean

Section headings

Documentation H2s and H3s in correct case. Output normalises line endings to LF for clean diffs across platforms. Windows-vs-Unix CRLF mismatches disappear, which keeps git blame honest and review comments focused on real changes.

instant counts

Slide titles

Decks and presentations. Code-point counts are stable across NFC/NFD normalisation. Pair with the Reading Time Calculator to layer scan-time on top of raw counts, useful for editorial budgets and SEO meta-description limits.

platform-aware

Email subjects

Marketing emails often use Title Case for subject lines. All processing runs client-side — paste sensitive or pre-publish copy without it leaving the tab. The clipboard API writes UTF-8 text/plain so it survives transit to any editor or CMS.

code-point-accurate

Citations

Academic article titles often want strict Chicago. Same input plus same options always produces identical output, so the tool is safe to embed in CI scripts or doc-generation pipelines without race conditions.

lossless
FAQ

Frequently asked questions

Chicago lowercases a few more words (if, is, it) than AP. Both keep articles, conjunctions, and short prepositions lowercase mid-title.
Yes — even stop words are capitalized when they're the first or last word of the title.
Treated as a unit — capitalized like any other word.
No. All processing runs locally.
AP for journalism, blogs, web copy. Chicago for books, academic writing. All Words when style guides don't apply.
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