Case Modify is a free online text toolkit: case converters (uppercase, lowercase, title case, sentence case), Unicode stylers, code formatters, encoders, random generators, and unit converters. Every tool runs in your browser - no account required.
Purpose-built toolsEach page focuses on a specific conversion, formatting, or reference task.
Privacy-first workflowsStandard text tools process input in the browser after the page loads.
Accessible by defaultPages use semantic headings, visible links, keyboard focus states, and mobile layouts.
Who uses Case Modify
Students fix essay capitalization, bloggers format headlines, developers prettify JSON and test regex, marketers build UTM links, and teams share quick utilities without installing desktop software.
Privacy-first by design
For standard tools, your text and values stay on your device after the page loads. That makes Case Modify practical for drafts, proprietary snippets, and customer data samples you do not want uploaded to a remote formatter.
Editorial standards
Guides and examples are written to be practical, plain-language references. We review pages for clear intent, examples, internal links, and corrections when a tool behavior or style recommendation changes.
Useful starting points
- Case converters — uppercase, title case, sentence case, and more
- Code & data tools — JSON, CSS/SCSS, Markdown, Base64, binary
- Random generators — numbers, choices, UUIDs, strong passwords
- Unit converters — weight, pressure, density, power, and more
- Blog guides — capitalization rules, passwords, and formatting tips
- How Case Modify works
- Documentation
- Frequently asked questions
Popular tools
Title Case Converter · JSON Formatter · Strong Password Generator · Random Number Generator · Markdown Formatter · CSS Formatter
Contact & feedback
Have a tool idea or found a bug? Email contact@casemodify.com. We read suggestions for new converters, formatters, and guides that would help writers and developers.
