Get a reliable result in three steps
- 1
Provide the source content requested by this tool.
- 2
Configure only the options relevant to the current operation.
- 3
Run the operation and review the completed result before using it.
What this tool does
Code Comparison and Diff gives you a fast, focused way to compare two source files or code versions in synchronized editors with line-level changes, navigation, search, and patch export. Everything runs locally in this tab.
The result is produced only after the input is checked. If the value cannot be processed, the workspace reports a specific error instead of guessing.
Features
- Synchronized original and changed editors
- Added, removed, and modified lines highlighted in place
- Side-by-side before and after values
- Ignore whitespace and case options
- Search and previous/next navigation
- Unified diff patch export
- Local UTF-8 file import
Input and output
- Input
- JavaScript, TypeScript, Python, Java, C, C++, C#, PHP, Go, Rust, HTML, CSS, SQL, Shell, JSON, XML, YAML, Markdown
- Output
- line diff and unified patch
- Processing
- Local browser
Example
function greet(name) {
return `Hello ${name}`;
}
---
function greet(name) {
return `Welcome ${name}`;
}Limitations
- Review important output before using it in production.
- Very large inputs remain subject to browser memory limits.
- The deterministic comparison is textual rather than an abstract-syntax-tree semantic review.
- Very large files use a bounded positional fallback to prevent quadratic memory use.