Image Diff Checker

High-Precision Diff Detection

Pixel-level precision comparison accurately detects subtle color changes, text misalignment, and object placement errors that the human eye may miss. Useful for pre-press checks in DTP design and finding unintended changes during website updates.

Multiple File Format Support

Supports common image formats like JPG, PNG, GIF, BMP, and WebP, as well as PDF file comparison frequently used in DTP work. Complete diff checking for various production materials with a single tool.

Intuitive Interface with Rich Features

Simple drag-and-drop operation for two files. Differences are highlighted in your chosen color with visually clear blink mode. Adjustable detection sensitivity allows flexible settings for any project.

Large Design File Support

Supports file sizes up to 100MB, capable of processing high-resolution design PDFs. Designed specifically for diff checking print data that DTP designers handle daily, enabling practical workflows.

Safety and Security

Strict file format checking prevents uploading unsupported file types. Large files (over 50MB) prompt confirmation before processing to maintain system stability. All processing is completed within your browser, so uploaded image data is never sent to or stored on external servers.

Ideal Use Cases

• Final proofreading for DTP designers
• Checking brochure and catalog revisions
• Design verification after coding for web designers
• Version change confirmation in document management
• Software UI change testing
• Any image verification work requiring accuracy