Online Diff Checker – Compare Text, Code, and Files Instantly
Fast, secure online diff checker to compare text, code, PDFs & spreadsheets. Highlight differences instantly with free and private tools.
Compare Text Files Online
Side-by-Side View
See changes clearly with a side-by-side view that highlights insertions, deletions, and modifications.
Multiple Diff Modes
Switch between different comparison modes (character, word, line) to find the exact changes you need.
Client-Side Processing
Your text is processed entirely in your browser. Nothing is ever stored or sent to a server.
Diff Checker for Code (JSON, XML)
Perfect for comparing code files, JSON configurations, XML documents, and other structured text formats. Instantly spot changes in your codebase.
PDF & Word Document Comparison
Compare PDF and Word documents by extracting and comparing their text content. Ideal for reviewing document revisions and tracking changes.
Excel & Spreadsheet Diff Tool
Compare Excel files and spreadsheets to find differences in data, formulas, and formatting. Essential for data validation and auditing.
Secure & Private File Comparison
All comparisons are processed entirely in your browser. Your files and data never leave your device, ensuring complete privacy and security.