Text Case & Naming Format Converter
This is an online text formatting tool for development and office scenarios. It supports real-time conversion of multi-line text, compatible with mainstream code naming conventions and letter case formatting. It supports step-by-step custom configuration and one-click quick conversion, automatically retains original line breaks, runs locally in your browser without uploading any data.
Core Advantages
- Dual-panel preview: Enter original content on the left, view conversion result in real time on the right, instantly preview changes and compare differences intuitively.
- Native line break support: Press Enter to start new lines normally, each line is processed independently; converted result keeps original line count and line breaks without collapsing into a single line.
- Debounced smooth input: Calculation runs with delay to avoid frequent computation lag, offering smooth typing experience without cursor jumping.
- Offline local processing: All conversion logic runs inside your browser; sensitive variables and text will never be sent to external servers.
- Responsive layout: Two-column side-by-side layout on large screens, automatically stacked vertically on mobile & small screens with great mobile compatibility.
One-Click Presets for Common Naming Styles
No manual step configuration needed. Select an option to generate standardized names instantly, ideal for frontend, backend, database, route and other development work:
- camelCase: Standard variable naming for JS & Java, example: helloWorldTest
- PascalCase: Class & type naming, example: HelloWorldTest
- snake_case: Python variables & database columns, example: hello_world_test
- CONSTANT_CASE: Global constant definition, example: HELLO_WORLD_TEST
- kebab-case: CSS class names & URL routes, example: hello-world-test
- dot.case: Configuration fields & path identifiers, example: hello.world.test
- path/case: File paths & hierarchical identifiers, example: hello/world/test
- Train-Case: Hyphenated format for titles, example: Hello-World-Test
Custom Step-by-Step Conversion for Flexible Format Combination
When preset mode is disabled, you can freely combine letter case rules and space replacement rules to meet personalized formatting requirements.
1. Letter Case Transformation
- Default: Keep original uppercase and lowercase letters unchanged
- Lowercase / Uppercase: Unify all letters to lower or upper case in one click
- Sentence Case: Capitalize only the first letter of the whole sentence, rest lowercase
- Title Case: Capitalize first letter of every word while keeping spaces between words
- Alternating Case (Start Lower) / Alternating Case (Start Upper): Alternate letter case character by character for special styled text
2. Space Replacement Rules
- Preserve Spaces: Do not modify separating spaces between words
- Remove All Spaces: Delete all space characters between words
- Replace spaces with dash, underscore, dot or slash: Replace word separators in batch while preserving previous letter casing without forced lowercase
- Custom Separator: Input single or multi-character separators freely (such as ->, ::, # etc.) after selecting this option
Auxiliary Preprocessing Feature
Toggle available: Merge consecutive spaces into a single space. It only collapses redundant inline spaces without destroying line breaks, convenient for tidying messy text formatting. Clear and copy-result buttons are included for efficient operations with neat copied content.
Application Scenarios
Programmers can batch standardize variable names, database column names, frontend CSS classes and URL routes; copywriters can batch adjust title capitalization and English paragraph formatting; bulk rename filenames and configuration entries. Eliminate tedious manual edits and greatly improve text formatting efficiency.
