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Case Checker

Paste any text and this tool will identify the most likely casing style (upper/lower/title/sentence/camel/snake/kebab, etc.). Use it to quickly verify naming conventions for variables, headings, and IDs.

Category: Text · URL: /tools/case-checker.html
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Use the Case Checker to classify your text casing without sending data anywhere.

  1. Paste text into the input box.
  2. Choose Analyze each line separately if you have a list.
  3. Click Check case to generate a compact report.
  4. Copy the report if you need to share or log it.
Keywords this page targets (natural cluster): case checker, check text case, detect uppercase or lowercase, is this title case, sentence case checker, camelCase checker, PascalCase checker, snake_case checker, kebab-case checker, screaming snake case checker, detect mixed case, string case detector, variable naming case check, filename case checker, does text follow case rules, analyze casing per line, check if all caps, check if all lowercase, detect kebab case, detect dot case
Secondary intents covered: Identify the casing style of a string before using it as a variable name, Validate API field naming conventions (camelCase vs snake_case), Check if headings are consistently Title Case or Sentence case, Detect accidental ALL CAPS or inconsistent capitalization, Review a list of identifiers line-by-line for mixed casing, Confirm whether a slug/filename matches kebab-case, Quickly classify text casing before converting it in a formatter

FAQ

What does this case checker do?

It analyzes your text and reports the most likely casing style (for example: UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case).

Can it check a list of items line by line?

Yes—enable “Analyze each line separately” to get a per-line classification and a small summary.

Does punctuation affect the result?

Basic upper/lower checks ignore non-letters; Title/Sentence checks can ignore punctuation at word edges if that option is enabled.

What’s the difference between camelCase and PascalCase here?

camelCase starts with a lowercase letter; PascalCase starts with an uppercase letter. Both avoid separators like spaces, underscores, and hyphens.

Why can one input match multiple cases?

Some strings fit more than one pattern (for example, a single word can be both PascalCase-like and Sentence case-like), so the tool lists “Also matches”.

Is my text sent to a server?

No. This tool runs in your browser and does not make network requests.

How do I convert text to a different case?

Use the related Case Formatter to transform text into upper/lower/title/camel/snake formats.