Compare two text snippets or code files online instantly with our free text diff checker. Identify differences, additions, and deletions in your code or documents.
AI Generation Prompt
Text Diff Checker and Code Comparison Tool Specification
Overview
A high-performance, single-file browser application designed to compare two versions of text or code side-by-side. The tool highlights additions, deletions, and changes instantly, making it an essential utility for developers and writers.
Feature List
- Real-Time Processing: Diff calculation triggers automatically as text is input.
- Visual Diff Modes: Supports side-by-side view for easy visual comparison and inline view for dense text.
- Granular Control: Toggles for 'Ignore Whitespace', 'Case Sensitivity', and 'Ignore Blank Lines'.
- Line Statistics: Displays line numbers for easy navigation in large code blocks.
- Responsive Design: Adapts automatically to mobile and desktop screen sizes.
- Export/Clear: Copy the diff result to the clipboard or clear input fields with a single click.
UI Layout
- Header: Minimalist title bar with a brief instructional subtitle.
- Input Section: Two large, resizable text areas positioned side-by-side on desktop, stacked on mobile. Each area is clearly labeled 'Original Text' and 'Modified Text'.
- Control Panel: A modern tool strip situated between the inputs containing switches for comparison settings.
- Results Section: A dedicated area below the inputs that presents the visual difference report using a standard diff format (red for deletion, green for addition).
Design Aesthetic (Light Mode)
- Palette: Use a clean, professional light-mode aesthetic. Backgrounds should be stark white (#FFFFFF) with neutral light-grey borders (#E0E0E0).
- Emphasis Colors: Added content uses a soft green background (#D4EDDA) with dark green text (#155724). Removed content uses a soft red background (#F8D7DA) with dark red text (#721C24).
- Typography: Utilize system-default sans-serif fonts for maximum readability and zero load time.
Animations & Transitions
- Micro-interactions: Subtle hover effects on buttons (slight elevation/shadow).
- Smooth Updates: Use CSS opacity transitions when the results area refreshes to provide a polished feel without jarring jumps.
Technical Constraints
- Single File: All CSS, HTML, and Vanilla JavaScript must be contained in one index.html file.
- Self-Contained: No external API calls, frameworks (React/Vue), or build steps allowed.
- Iframe Ready: The tool must be fully functional and responsive when hosted within a sandboxed iframe.
- No Footer/No Dark Mode: The UI must remain a clean, functional light-mode interface without a footer section.
Spread the word
Files being used
Frequently Asked Questions
Everything you need to know about using this application.
How do I compare two pieces of text online?
Simply paste your original text in the left box and the modified text in the right box. The tool will automatically highlight the differences in real-time without requiring any button clicks.
Is this text comparison tool safe and private?
Yes, this tool works entirely in your browser using local JavaScript. No data is ever uploaded to a server, making it perfectly safe for sensitive code, documents, or private notes.
Can I use this diff checker for programming code?
Absolutely. It is specifically designed to handle source code, providing clear visual indicators for added, removed, or modified lines across various programming languages.
