Text Diff Checker
Text & Source Code Diff Checker
Compare two texts and highlight the differences (additions and deletions).
How to Use
Enter the 'Original Text' and 'Modified Text' into the left and right input fields. You can quickly load content by directly dragging and dropping your text files into the browser.
Select the ideal comparison mode from the left sidebar: 'Lines' for code blocks, 'Words' for articles, or 'Characters' for precise typographical corrections.
Toggle ignore options such as 'Ignore Whitespace' or 'Ignore Case' to filter out superficial changes like indentation or formatting, letting you focus on the core modifications.
Review the real-time highlighted differences in either a side-by-side Split View or an inline Unified View. Finally, click 'Export' to download the diff report as an HTML file.
Why Choose Madao Factory?
100% Secure Client-Side Processing:
Safely compare highly confidential source code, internal documents, or sensitive contracts. All diff calculations run locally within your browser, ensuring zero data transmission or cloud storage.
Advanced 3-Tier Comparison Engine:
Choose the exact level of granularity you need. Use 'Line-by-Line' for structural code reviews, 'Word-by-Word' for copy editing, or 'Character-by-Character' to catch subtle typos and punctuation changes.
Versatile Viewing Modes & Syntax Highlighting:
Seamlessly toggle between a GitHub-style side-by-side Split View and a compact Unified View. The built-in syntax highlighter supports major languages like HTML, CSS, and JavaScript, greatly enhancing code readability.
Smart Filtering Options:
Enable 'Ignore Whitespace' or 'Ignore Case' to eliminate noisy diffs caused by code formatters or simple indentation changes, allowing you to quickly spot the actual logic modifications.
Instant HTML Report Export:
Generate a standalone HTML file containing the color-coded diff results (green for additions, red for deletions) with a single click. Perfect for archiving work logs or sharing revision histories with your team.
Frequently Asked Questions
Is it safe to compare proprietary source code here?
Absolutely. Our diff checker is 100% serverless. Your text and code are processed entirely on your local machine, meaning your data is never uploaded, stored, or visible to us.
How can I share the diff results with a colleague?
Simply click the 'Export' button to download a styled HTML file of the diff. You can send this file to your colleagues, and they can open it in any web browser to see the exact highlighted changes.
Why are there so many differences just because of spacing?
Code formatters often change spaces and tabs. Check the 'Ignore Whitespace' option in the sidebar to hide these formatting changes and reveal only the meaningful differences.