URL Case Converter: Change URL Text Case Instantly

Convert any URL to lowercase, uppercase, or title case with our free tool. Ensure your links follow SEO best practices and work correctly on case-sensitive servers. Paste a URL and choose your case style.

Input URL/Text

Convert To

Output

Converted text will appear here...

About Case Conversion

Convert URLs and text between different case formats. Useful for normalizing URLs, formatting code identifiers, or preparing text for specific use cases. Note: URLs are case-sensitive in the path portion but case-insensitive in the domain portion.

How It Works

This URL case converter transforms text between different letter case formats instantly, right in your browser.

The conversion process:

Input analysis: Your URL or text is analyzed character by character.
Case transformation: Depending on the selected format, each letter is converted to uppercase, lowercase, or a combination.
Pattern recognition: For formats like camelCase or snake_case, the tool identifies word boundaries (spaces, hyphens, underscores).
Output generation: The transformed text is displayed instantly, ready to copy.

For example, "HTTPS://EXAMPLE.COM/My-Page" can become "https://example.com/my-page" (lowercase) or "https://example.com/my_page" (snake_case) with a single click.

When You'd Actually Use This

SEO URL Optimization

Convert URLs to lowercase for SEO best practices. Search engines treat uppercase and lowercase URLs differently.

Code Variable Naming

Transform URLs into camelCase or snake_case for use as JavaScript variables or database column names.

Server Path Normalization

Ensure URLs work on case-sensitive servers (Linux) by converting paths to consistent lowercase.

Bulk URL Cleanup

Fix inconsistent URL casing in spreadsheets or databases before importing or migrating data.

API Endpoint Formatting

Convert endpoint URLs to match API documentation standards, which often specify exact casing.

File Path Conversion

Transform file paths between different operating system conventions (Windows vs Unix casing).

What to Know Before Using

URL paths are case-sensitive

On Linux servers, /Page and /page are different URLs. Converting to lowercase is safest for web URLs.

Domain names are case-insensitive

EXAMPLE.com and example.com resolve to the same site. Only the path portion matters for casing.

Query parameters may be case-sensitive

Some APIs treat ?User=1 and ?user=1 differently. Know your API's conventions before converting.

camelCase removes separators

Converting to camelCase strips hyphens and underscores. This is great for variables but breaks URL paths.

Special characters are preserved

Characters like /, ?, =, & remain unchanged. Only letters (A-Z, a-z) are affected by case conversion.

Common Questions

Should URLs always be lowercase?

For SEO and consistency, yes. Google recommends lowercase URLs. It prevents duplicate content issues and makes URLs easier to type and share.

What's the difference between snake_case and kebab-case?

snake_case uses underscores (my_variable_name), kebab-case uses hyphens (my-variable-name). URLs typically use kebab-case; code variables often use snake_case or camelCase.

Does case conversion affect URL functionality?

The domain portion works either way. The path might break on case-sensitive servers if you change it. Always test converted URLs.

Can I convert multiple URLs at once?

Paste multiple URLs separated by newlines - each will be converted. For bulk operations, consider a spreadsheet with formulas.

What is Title Case for URLs?

Title Case capitalizes the first letter of each word. It's rarely used in URLs (keeps them looking unprofessional) but useful for display text.

Is Sentence case different from Title Case?

Yes. Sentence case only capitalizes the first letter (like a sentence). Title Case capitalizes most words. Both are uncommon in actual URL paths.

Will this break my existing links?

If you change URL casing on your website, set up 301 redirects from old URLs to new ones. Otherwise, you'll get 404 errors and lose SEO value.

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