Check If Image Is WebP

A fast, secure, and privacy-first online tool that instantly detects whether an image file is in WebP format. All analysis is performed locally inside your browser.

About the Tool

The Check If Image Is WebP tool allows users to instantly verify the true format of an image file. Many images are renamed with different extensions, which can cause confusion. This tool reads the internal file signature rather than relying on the file name, ensuring accurate detection every time.

Key Benefits of Using This Tool

• Completely free to use with no limitations
• Works instantly without any software installation
• 100% privacy-friendly with local in-browser processing
• No internet upload required for file analysis
• Accurate detection based on file structure, not extension
• Works on mobile devices, tablets, and desktops

Features of This Tool

• Drag-and-drop or file selection support
• Instant WebP format verification
• Support for all common image types
• Clear success and error messages
• Lightweight and fast performance
• Fully responsive, mobile-friendly design
• Works offline once the page is loaded
• No tracking, cookies, or personal data collection

Use Cases of This Tool

• Verifying images before uploading to websites
• Checking downloaded files with unknown formats
• Debugging image compatibility issues
• Validating assets for web development projects
• Confirming WebP conversions from other tools
• Ensuring correct format for performance optimization
• Helping designers and developers manage image libraries

Fun Fact About This Tool

WebP files are identified not by their file extension but by a unique internal signature that begins with the characters RIFF and WEBP. This tool checks that exact signature, just like professional image processing software does behind the scenes.

Historical Context of This Tool

The WebP image format was introduced by Google to provide better compression and faster loading times on the modern web. As WebP grew in popularity, users began encountering mislabeled or incorrectly converted files. Simple file extensions were no longer reliable indicators of format. Tools like this emerged to help users quickly and accurately determine whether an image is truly a WebP file by inspecting its binary structure rather than trusting the file name. This approach reflects modern best practices in digital file verification.