FileMock

FileMock is a free, web-based mock file generator designed to help developers, QA engineers, and testers create a variety of test files instantly. It supports generating mock videos in formats like MP4, MOV, AVI, MKV, and WebM; documents including PDF, TXT, RTF, HTML, XML, CSV, and JSON; images in PNG, JPG, WebP, BMP, and GIF formats; as well as audio files such as MP3, WAV, OGG, M4A, and WebM. FileMock offers precise control over file sizes, making it ideal for testing file uploads, storage systems, API endpoints, and application performance under different scenarios. The tool operates entirely client-side, ensuring user privacy and eliminating the need for registration or sign-up. Its fast, reliable, and testing-focused features make it a valuable resource for continuous integration and deployment pipelines, enabling seamless integration into development workflows. FileMock is free forever and tailored specifically for software testing and development environments.