Bobek

Free online writing tool

Text Case Converter

Paste or type your text, then change its letter case in one click. Choose a standard writing style, a developer format, or a social-media-friendly option.

Up to 100,000 characters
Words
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Characters
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Without spaces
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Lines
0

For documents, emails, headings, and everyday writing.

Developer and filename cases

Turn words into consistent names for code, URLs, and files.

Social media and web formats

Prepare captions, hashtags, and readable web slugs.

Converted locally. Your text stays in this browser and is not sent to Bobek.

Add some text to begin.

Quick guide

How to change text case

The converter edits the text in place, so you can try several formats before copying or downloading the result.

  1. 01

    Paste or type your text

    Add up to 100,000 characters. Live counters show the number of words, characters, non-space characters, and lines.

  2. 02

    Choose a conversion

    Select a writing case, a code-friendly format, or an option designed for captions, hashtags, and web addresses.

  3. 03

    Copy or download

    Copy the converted text to your clipboard or save it as a plain-text file. You can keep editing before you export it.

Choosing a format

The right case for every context

Letter case changes how text reads and where it can be used. Standard prose, source code, filenames, URLs, and social posts often need different formats.

What is sentence case?

Sentence case lowercases the text, then capitalises the first letter of each sentence. It is useful for natural-looking paragraphs and captions.

How does title case work?

Title case capitalises the important words in a heading while keeping short joining words lowercase unless they appear first or last.

Which cases are useful in code?

camelCase and PascalCase join words without separators. snake_case, kebab-case, CONSTANT_CASE, and dot.case use visible separators.

What are the social media options?

Create one readable PascalCase hashtag, turn each word into a separate hashtag, use alternating case, or tidy unwanted spacing in a caption.

What is a URL slug?

A slug is a lowercase, hyphen-separated version of a title that is easier to use in a web address, such as summer-photo-guide.

Is my text uploaded or saved?

No. Conversion, counting, copying, and TXT file creation happen locally in your browser. Bobek does not receive or store the text.